Questions and answers by

jalonn:3

Questions (189)

Writing Reminders:You MUST complete the outline as directed. You will NOT receive credit if you turn in a paper that is not in
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Slide 1: Applicant #1Include a minimum of 3 sentences to explain your response. Slide 2: Applicant #2 Include a minimum of 3
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Which of the following is a quality of a convex lens?Responses light is spread out light is spread out light is reflected light
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On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made
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Correctly order the parts of the electromagnetic spectrum from shortest wavelength to longest wavelength.Reorder answers
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A student has to create a model of a convex lens. Which property of a convex lens should the student include in the model?a The
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A student is investigating two transverse waves. One of the waves is electromagnetic and the other wave is mechanical. Which
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Question 15 (1 point)Which type of electromagnetic waves would be the best to use in an object designed to cook food? a infrared
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Question 14 (1 point)Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have
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Question 14 (1 point)Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have
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Different colors absorb and reflect different amounts of sunlight. Which color would make the most sense to use to paint a house
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What causes light to slow down?a moving into a lighter medium b moving into a denser medium c moving into a vacuum d moving into
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On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made
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When the pitch of a wave increases, the wavelength of the wavea doubles. b stays the same. c decreases. d increases.
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Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of
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Rachel is learning about electromagnetic radiation that comes from the Sun. What types of electromagnetic radiation does the Sun
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Why would a baseball player see a baseball flying through the air before he hears the crack of the ball on the bat?a because
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Question 4 (1 point)What happens when light waves travel from air through a denser medium? a They will slow down and bend. b
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1.What happens when light waves travel from air through a denser medium?a They will slow down and bend. b They continue to
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What happens when light waves travel from air through a denser medium?a They will slow down and bend. b They continue to travel
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Describe how a light wave changes as it travels from the air into water.a It slows down because water is less dense than air. b
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Which of the following statements best describes the relationship between wavelength and frequency?a The shorter the wavelength,
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What is the difference between a reflected and a diffracted sound wave?a A reflected sound wave is absorbed by the medium. A
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The data shows the speed of sound through air and sea water at 21°C.How does the speed of sound in sea water compare to the
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Question 2 (1 point)Through which of the following would sound waves travel the fastest? a a vacuum b a railroad track c Earth's
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On a guitar, the longest string vibrates slowly, and the shortest string vibrates very quickly. What conclusion can be made
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Question 5 (1 point)A student must create a mode of a lens. The lens must be able to focus light into a small space. Which best
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Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have enough energy to
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Question 1 (1 point)The diagram below shows the frequencies of various types of electromagnetic radiation. image
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What is the wavelength for the wave provided below?1340619 a 6 m b 3 m c 1 m d 2 m
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Question 9 (1 point)The wavelength of the wave in the above diagram is: a 0.4 m b 0.2 m c Cannot be determined from graph. d 1.0
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Which of the following is an example of diffraction?a Sound bending around a corner. b Light bending as it enters a prism. c
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A student performs an experiment where he sends sound waves from the air through a solid, a liquid, and a gas. He records the
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Question 5 (1 point)1664594 Based on the data table, in which substance will sound waves travel through the fastest? a
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Question 4 (1 point)When a light wave enters a medium of greater density, which of the characteristics below will decrease in
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Ms. Knuth places a stick in a pond. When she looked down at the stick, it appeared to be broken or bent at the point where the
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Which of the following correctly expresses the relationship between frequency and wavelength. Use the diagram below to help you.
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Question 1 (1 point)1871133 Her teacher asks her to change the wave to show a greater energy transfer. What can the student do?
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Match each picture with the correct type of substance.Put responses in the correct input to answer the question. Select a
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How do particles of a gas differ from particles of a liquid when in the same container?Responses Gas particles are closer
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What does an element of gold contain?Responses a simple mixture of different atoms a simple mixture of different atoms one kind
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Maribel and Isabela were conducting the following experiment:Place and empty water bottle on the table and remove the lid.
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A stack of newspapers is burned completely to ash in a laboratory. How does the resulting mass relate to the initial mass of the
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Luke heats a liquid until it changes to a gas. What type of change occurs to the liquid?Responses chemical chemical physical
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The energy transferred between particles of two objects that have a difference in temperature is:Responses potential energy.
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Mariana conducted an experiment where she burned a 5 g strip of magnesium metal in an open flame. The result was a 3.5 g white
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Why does salt water appear to be a single substance even though it contains more than one substance?Responses The components in
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What chemical change occurs as a candle burns?Responses A. The candle wax turns liquid as it burns. B. Heat and light are
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What chemical change occurs as a candle burns?Responses The candle wax turns liquid as it burns. The candle wax turns liquid as
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Why will a balloon filled with helium float in air?Responses Helium is as dense as air. Helium is as dense as air. Helium is
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Which of the following is a chemical property?Responses ability to dissolve in water ability to dissolve in water mass mass
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Which of the following describes the difference between the motion of liquid water and water vapor?Responses The motion of the
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QuestionWhich of the following statements best describes the atoms and molecules that make up a glass filled with water?
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Reggie puts a beaker of ice and water on a hot plate, and the ice slowly begins to melt as shown in diagram below. After a few
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How many atoms of chlorine (Cl) are in a molecule of phosphorus trichloride, PCl3?Responses 0 0 1 1 2 2 3 3
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A liquid has a mass of 25 grams (g) and a volume of 10 milliliters (mL). What is the density of the liquid?Responses 4.0 g/ml
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Structure and Properties of Matter Unit Test8 of 318 of 31 Items Question What should be corrected in the model of nitrogen (N)
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Structure and Properties of Matter Unit Test7 of 317 of 31 Items Question Which element does NOT have similar chemical
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Structure and Properties of Matter Unit Test5 of 315 of 31 Items Question Natasha wrote a table comparing pure substances and
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Does the equation below follow the Law of Conservation of Matter?2As + 6NaOH --> 2Na3AsO3 + NH2 Responses No, because the
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Which of the following will NOT occur when water undergoes a physical change?Responses The molecules become less closely packed.
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Question 18 (1 point)Which statement is true about the relationship between energy and temperature? a As energy increases, the
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Question 20 (1 point)A plastic cup is filled with 15.5 grams of water. The cup is sealed and placed in the freezer. The water
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Question 18 (1 point)In the picture, which box on the right shows the correct products according to the Law of Conservation of
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Question 15 (1 point)Which statement about the event above is NOT correct? a It is a physical change. b It is a chemical change.
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Question 13 (1 point)Determine whether each chemical equation follows the Law of Conservation of Matter. Column A 1. CH4 + 2O2
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Question 12 (1 point)Determine whether a physical or chemical change is taking place during each event. Column A 1. dissolving:
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Question 11 (1 point)Which element behaves MOST like Magnesium (Mg)? a S b Sr c Sn d Si
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Question 10 (1 point)Determine whether each property is physical or chemical. Column A 1. density: density 2. reacts with
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Question 9 (1 point)When determining whether a chemical change has taken place, you observe and look for several indicators.
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Which statement about density is NOT true?a Objects less dense than water will float. b Density is a physical property. c
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Question 7 (1 point)Determine whether each statement describes an atom, a molecule, or both. Column A 1. smallest piece of an
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Question 6 (1 point)What happens to the particles in a liquid when you heat it up? a They become much smaller and take up less
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How many of each subatomic particle does a stable Sodium (Na) atom have?Column A 1. protons: protons 2. neutrons: neutrons 3.
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Question 4 (1 point)Hans and Kristoff were testing powders in science class. First, they put the powder in a zip lock bag. Next,
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Question 3 (1 point)Determine whether each statement describes a solid, liquid, or gas. Column A 1. definite shape: definite
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Question 2 (1 point)Put each state of matter in the correct order from LEAST amount of energy to MOST amount of energy. Reorder
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Which statement about this atom is FALSE?Use the Periodic Table to help you. a The mass of the atom is 35 AMU. b This is a
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Question 5 (1 point)Caren combines copper (Cu) and silver nitrate, (AgNO3) producing copper nitrate (Cu(NO3)2) and silver (Ag),
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Question 4 (1 point)Stuart measures 10 grams of water into a pan and freezes it. A day later he takes it out of the freezer and
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Question 3 (1 point)Is this equation balanced? 2Zn(OH)2 + 2NaOH → Na2ZnO2 + 2H2O a The equation is balanced because all
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Question 1 (1 point)The reactants in a chemical equation have 3 carbon atoms, 6 oxygen atoms, and 4 hydrogen atoms. In order to
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Question 4 (2 points)Determine whether the events listed below during the baking process are indicators of a physical change or
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Ethan makes the table below to record his observations when mixing baking soda and vinegar in a beaker.image
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Which event below is a physical change?543531.png a A b B c C d D
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Question 1 (1 point)Two friends are discussing physical and chemical changes. Isabela says that when you eat, it is a physical
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Question 4 (1 point)Javier's teacher gives him four cards, each displaying information about an element, and asks him to put
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Question 3 (1 point)How many neutrons does this atom have? a 30 b 82 c 26 d 55.845
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Question 2 (1 point)Which statement below is NOT true about this atom? 5eab69d2-6572-428a-9843-c02560c8d5b1 a It is a stable
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Question 5 (2 points)Match each subatomic particle with the correct descriptions. Column A 1. Has a positive charge.: Has a
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Question 3 (1 point)A student pours a spoonful of dirt into a cup of water. The water and dirt are stirred together. The water
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Question 2 (1 point)What is all matter made of? a cells b molecules c compounds d atoms
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Question 1 (1 point)Which statement is NOT TRUE about molecules and compounds? a All compounds are molecules. b Compounds are
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Question 4 (1 point)The graph below shows the phase change for H2O. Which statement best describes what is occurring at segment
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Question 1 (1 point)1340358 Based on the methods used to separate the substance into its parts, is Substance U a compound? a
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Question 3 (1 point)The graph below shows the phase change for H2O. Which statement best describes what is occurring at segment
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Question 2 (1 point)1340358 Based on the methods used to separate the substance into its parts, is Substance U a compound? a
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The diagram shows molecules in a state of matter.Which statement best describes what will occur if enough thermal energy is
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Read the following sentences (From Illuminate)- "But off there in the cities there are thousands of rolling stones like me. We
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Read the following sentence (From Illuminate)- "All we have ever managed to do is to pay our rent, the exorbitant rent that one
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