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Isaiah

Questions (435)

CaCl2
1. 1 answer
2. 15 views
Fe2O3
1. 1 answer
2. 14 views
CH4
1. 1 answer
2. 11 views
what element is CO
1. 1 answer
2. 10 views
CO
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2. 9 views
H2O2
1. 1 answer
2. 16 views
C6H12O6
1. 1 answer
2. 12 views
NH3
1. 1 answer
2. 9 views
HCl
1. 1 answer
2. 9 views
NaCl
1. 1 answer
2. 10 views
WHAT ELEMENT IS CO2
1. 1 answer
2. 8 views
A table of the chemical is elements is known as the ____________________
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2. 11 views
A(n) ____________________ is a large number in front of an element or compound that indicates the number of molecules in a
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2. 11 views
Two or more atoms chemically combined is known as a(n) ___________________
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2. 16 views
A(n) ____________________ is the process in which one substance is chemically changed into a new substance.
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2. 12 views
A(n) ____________________ is the building block of matter that makes up everyday objects.
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2. 10 views
A(n) ____________________ is a pure substance that cannot be broken down chemically.
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2. 11 views
A(n) ____________________ is a small number written after an element’s symbol in a chemical formula that indicates the number
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2. 11 views
Isaiah recorded the grade-level and instrument of everyone in the middle school School of Rock below.Seventh Grade Students
1. 1 answer
2. 12 views
In a popular online role playing game, players can create detailed designs for their character's "costumes," or appearance. Juan
1. 1 answer
2. 13 views
Which event is least likely to occur?Answer Multiple Choice Answers Rolling a prime number on a six-sided die, numbered from 1
1. 1 answer
2. 12 views
Which event is least likely to occur?Answer Multiple Choice Answers Rolling an even number or an odd number on a six-sided die,
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2. 12 views
Which event is most likely to occur?Answer Multiple Choice Answers Rolling a number greater than or equal to 3 on a eight-sided
1. 1 answer
2. 10 views
Which event is least likely to occur?Answer Multiple Choice Answers Rolling a number greater than or equal to 6 on a eight-sided
1. 1 answer
2. 15 views
Which event is most likely to occur?Answer Multiple Choice Answers Rolling a number greater than or equal to 3 on a eight-sided
1. 1 answer
2. 10 views
Through ten games of basketball this season, Hailey has made 89% of her free-throws. Which word or phrase describes the
1. 1 answer
2. 13 views
Hailey is playing a board game. The probability that Hailey will lose a turn on her next turn is 0%. Which word or phrase
1. 1 answer
2. 10 views
The weather forecaster says that tomorrow there is a 100% chance that it will rain. Which word or phrase describes the
1. 1 answer
2. 9 views
Gabriella is playing a board game. The probability that Gabriella will lose a turn on her next turn is 100%. Which word or
1. 1 answer
2. 10 views
Jose is playing a board game. The probability that Jose will lose a turn on his next turn is 0.9. Which word or phrase describes
1. 1 answer
2. 10 views
Chase rolls a standard six-sided die, numbered from 1 to 6. Which word or phrase describes the probability that he will roll a
1. 1 answer
2. 6 views
Which of these contexts describes a situation that is likely?Answer Multiple Choice Answers Rolling a 7 on a standard six-sided
1. 1 answer
2. 8 views
Which of these contexts describes a situation that is likely?Answer Multiple Choice Answers Rolling a number greater than 6 on a
1. 1 answer
2. 6 views
Which of these contexts describes a situation that is impossible?Answer Multiple Choice Answers Rolling a multiple of 2 on a
1. 1 answer
2. 5 views
Kadeesha has a bag of candy full of 10 strawberry chews and 10 cherry chews that she eats one at a time. Which word or phrase
1. 1 answer
2. 9 views
Benjamin has a bag of candy full of 17 strawberry chews and 3 cherry chews that he eats one at a time. Which word or phrase
1. 1 answer
2. 9 views
Muslims, like Jews and Christians, believe there is only one God. This belief is called monotheism and can be traced back to
1. 1 answer
2. 7 views
• paper• textiles • steel The box lists examples of A. goods that were banned from being sold along most Arab trade
1. 1 answer
2. 13 views
The Arabian Peninsula is located between which two landmasses?A. Asia and Australia B. Europe and Asia C. Africa and Asia D.
1. 1 answer
2. 14 views
Muslims, like Jews and Christians, believe there is only one God. This belief is called monotheism and can be traced back to
1. 1 answer
2. 7 views
The Arabian Peninsula is mostly made up which type of climate?A. humid continental B. subtropical steppe C. tundra D. desert
1. 1 answer
2. 6 views
The Arabian Peninsula is located between which two landmasses?A. Europe and Africa B. Asia and Australia C. Africa and Asia D.
1. 1 answer
2. 6 views
Islam, whose followers are known as Muslims, began in Arabia in the seventh century and is based upon the teachings of which of
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2. 6 views
Where were many of the Arab trade routes established during the Middle Ages?A. along the Persian Gulf B. near rivers and the
1. 1 answer
2. 6 views
Muslims believe the Qur'an is the final word of God to all people and is therefore perfect in every way. The Qur'an is so
1. 1 answer
2. 6 views
How many different elements are present in the chemical formula above?1 2 3 4
1. 1 answer
2. 10 views
Which of the following correctly lists the elements in the chemical formula above?Carbon, hydrogen, cobalt, oxygen Carbon,
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2. 9 views
Which of the following chemical formulas contains the most molecules?5CO 3H2O 2Fe2O3 4C3H8
1. 1 answer
2. 8 views
Which of the following chemical formulas contains the least total atoms?CO H2O Fe2O3 C3H8
1. 1 answer
2. 8 views
Which of the following chemical formulas contains the most total atoms?CO NaCl NaHCO3 H2O
1. 1 answer
2. 8 views
Which of the answers below would not be a chemical symbol of an element?Mg Zn fe Co
1. 1 answer
2. 7 views
How many atoms of sodium does this formula indicate you have: NaCl0 1 2 3
1. 1 answer
2. 8 views
How many atoms of hydrogen does this formula indicate you have: 5H2O 1 2 7 10
1. 1 answer
2. 10 views
Which of the following provides the number of molecules of an element or compound?Coefficient Chemical symbol
1. 1 answer
2. 7 views
Which of the following provides the number of atoms of an element?Coefficient Chemical symbol Subscript Capitals
1. 1 answer
2. 8 views
Solar energy from the Sun's rays is absorbed by the Earth's land and water surfaces. This absorbed energy is then radiated back
1. 1 answer
2. 7 views
Water vapor traps heat in the Earth's atmosphere. This serves to maintain Earth's atmospheric temperature. Based on this
1. 1 answer
2. 6 views
Many different processes, both natural and human-caused, can release carbon dioxide into the atmosphere. Which of the following
1. 1 answer
2. 7 views
Each of the following gases is present in the Earth's atmosphere. Which of them contributes to the greenhouse effect?oxygen
1. 1 answer
2. 6 views
Why are many scientists concerned about humans adding large amounts of carbon to the atmosphere by burning fossil fuels
1. 1 answer
2. 7 views
Which of the choices below is one of the primary gases found in the atmosphere?A. carbon dioxide B. argon C. nitrogen D. helium
1. 1 answer
2. 6 views
Which of the following statements about forest fires and the atmosphere is true?Forest fires add oxygen to the atmosphere.
1. 1 answer
2. 10 views
Which statement best describes how excessive carbon dioxide and other greenhouse gases in the atmosphere alter the system
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2. 5 views
The envelope of gases surrounding Earth is known as the atmosphere. Which of the following statements accurately describes the
1. 1 answer
2. 4 views
Which of the following statements about the information in the graph is most likely to be true?A. Human activities contributed
1. 1 answer
2. 7 views
Greenhouse gases are gases that trap heat within the Earth's atmosphere. What would be the most likely result of an increase in
1. 1 answer
2. 8 views
Which of these is always present in the atmosphere?A. water vapor B. hail C. snow D. sleet
1. 1 answer
2. 6 views
Which of the following natural processes involve the use and renewal of atmospheric gases?A. decaying of organic matter B.
1. 1 answer
2. 7 views
These cylinders contain layers of ice, with each layer corresponding to one warming and cooling period, or one year. With these
1. 1 answer
2. 8 views
The Earth's atmosphere contains certain chemicals that absorb infrared energy emitted by the Sun and Earth. The process by which
1. 1 answer
2. 6 views
Organs orOrgan Systems cell wall
1. 1 answer
2. 6 views
cell wall
1. 1 answer
2. 9 views
controls which substancesenter or exit a cell
1. 1 answer
2. 8 views
the control center of a cell; sendsinstructions to other cell parts
1. 1 answer
2. 8 views
provides strength andsupport for plant cells
1. 1 answer
2. 6 views
allows plant cells to trap lightenergy in order to make food is?
1. 1 answer
2. 6 views
Prokaryotes are organisms that do not have defined nuclei in their cells. Eukaryotes are organisms that have cells with
1. 1 answer
2. 7 views
Based on the positions of sodium (Na) and potassium (K) in the table, Tracy can predict that sodiumA. is more abundant than
1. 1 answer
2. 7 views
Which part of an atom has a negative charge?A. nucleus B. neutron C. electron D. proton
1. 1 answer
2. 7 views
How many total daughter cells are produced when one cell undergoes meiosis?A. It depends on the organism. B. 8 C. 4 D. 2
1. 1 answer
2. 8 views
Egg and sperm cells contain half the number of chromosomes as body cells.Egg and sperm cells are known as _______ cells. A.
1. 1 answer
2. 6 views
Which of the following best describes the difference between a mixture and a pure substance?A. A mixture has the same properties
1. 1 answer
2. 6 views
The diagram shows heat being removed from the substance, causingA. it to form a liquid as its particles move farther apart. B.
1. 1 answer
2. 5 views
Iron reacts with sulfur to form iron sulfide. If 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how
1. 1 answer
2. 8 views
A copper wire is made of copper (Cu) atoms. Which of the following best describes the copper atoms?A. They would be mostly the
1. 1 answer
2. 6 views
In the chemical reaction below, sodium (Na) and chlorine (Cl) combine to form sodium chloride (NaCl).2Na + Cl2 → 2NaCl The
1. 1 answer
2. 9 views
A scientist created diagram X to represent the molecules of a kind of gas in a closed container. Diagram Y represents the
1. 1 answer
2. 8 views
A sample of a gaseous substance changes into liquid.
1. 1 answer
2. 9 views
If an atom has 18 protons, 16 neutrons, and 22 electrons, what is the atom's electrical charge?A. +6 B. -4 C. -2 D. +4
1. 1 answer
2. 7 views
Which of these best explains why the daughter cells produced by binary fission are identical?A. Binary fission involves a single
1. 1 answer
2. 8 views
Which of the following are examples of sexual reproduction?A pollen grain from one flower fertilizes another flower, resulting
1. 1 answer
2. 6 views
Liz is examining a plant cell under a microscope. She sees many small green strutures inside the cell. Her teacher explains that
1. 1 answer
2. 6 views
The atomic symbols of nitrogen and oxygen are N and O, respectively. The chemical formula of a particular substance is NO2.
1. 1 answer
2. 6 views
How do the physical and chemical properties of calcium iodide (CaI2) compare to carbon disulfide (CS2) and sodium fluoride
1. 1 answer
2. 5 views
The egg cells of a dog have 39 chromosomes each. How many chromosomes does each of the dog's body cells have?A. 156 B. 39 C. 78
1. 1 answer
2. 8 views
Michelle wants to classify an organism that she is studying in lab. The organism is multicellular, makes its own food, and is
1. 1 answer
2. 7 views
Helium (He), neon (Ne) and argon (Ar) are all colorless, odorless gases with low chemical reactivity. Based on the periodic
1. 1 answer
2. 7 views
A water molecule is made of hydrogen and oxygen atoms and has the formula H2O. How would a mixture of hydrogen and oxygen differ
1. 1 answer
2. 7 views
Which of the following statements is true about the lithium and the helium atoms?A. There is no difference between helium and
1. 1 answer
2. 7 views
When a highly reactive metal, such as magnesium (Mg), is mixed with a reactive nonmetal such as sulfur (S), the two elements
1. 1 answer
2. 6 views

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