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December 2025

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A rocket motor is used for different model rockets that have different masses. The results of tests for a rocket motor are shown in the table. Relationship Between Mass and Acceleration Mass (kg) Acceleration (m/s2) 0.09...
Asked by jaun 1 answer
During a game of tug-of-war, two students are pulling on a rope. One student pulls to the left with a force of 35 N, while another student pulls to the right with a force of 35 N. What is the net force being applied to t...
Asked by jaun 1 answer
Which of the following is related to water’s high specific heat capacity?(1 point) Responses It contributes to water's ability to dissolve ionic compounds. It contributes to water's ability to dissolve ionic compounds. I...
Asked by jaun 1 answer
Recall how many Calories are in 1 kcal . Compare 41 Calories to 410 kcal (1 kcal=1,000 calories ).(1 point) Responses It is not possible to compare these two values. It is not possible to compare these two values. 41 Cal...
Asked by jaun 1 answer
Photosynthesis occurs in two stages: the light-dependent stage and the light-independent stage. Identify the location within a plant cell where the light-dependent stage of photosynthesis takes place.(1 point) Responses...
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What are condensation and evaporation components of?(1 point) Responses the water cycle the water cycle transpiration transpiration the carbon cycle the carbon cycle photosynthesis
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When iron pipes come in contact with water and oxygen, iron transfers electrons to the oxygen molecules. Which statement about the reactants is correct?(1 point) Responses Iron is the oxidizing agent. Iron is the oxidizi...
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Use the generalized equation to answer the question. A + BC → B + AC Which type of reaction is modeled by the equation? (1 point) Responses decomposition decomposition double replacement double replacement synthesis synt...
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Which generalized equation represents a double-replacement reaction?(1 point) Responses A + BC → B + AC A + BC → B + AC A + B → AB A + B → AB AB + CD → AD + CB AB + CD → AD + CB AB → A + B
Asked by jaun 1 answer
Under certain conditions, water can be separated into oxygen and hydrogen gases according to the equation 2H2O → 2H2 + O2. In a lab, 112g of hydrogen gas and 888g of oxygen gas were collected. Student A says that the amo...
Asked by jaun 1 answer
Use the periodic table to answer the question. The periodic table of elements shows element groups, periods, and element properties. How is an atom of the element xenon (Xe) likely to act during a chemical reaction? (1 p...
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Use the periodic table to answer the question. An illustration shows the periodic table of elements with elements arranged in increasing order of atomic number in 18 columns (groups) and 7 rows (periods). Which compariso...
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Which statement best describes a weak base?(1 point) Responses It donates protons and completely dissociates in water. It donates protons and completely dissociates in water. It donates protons and only partially dissoci...
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In an experiment involving a balloon, a scientist notices that the gas particles within the balloon begin to move faster, resulting in the balloon expanding. Which statement best describes the experiment?(1 point) Respon...
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A person is drinking a glass of soda with ice. Which option describes the relative kinetic energy of molecules in and above the soda in the glass?(1 point) Responses in: least energy above: greatest energy in: least ener...
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Use the diagram of the molecular structure of lactic acid to answer the question. An illustration shows the structure of lactic acid as C single bond C with functional groups CH3 and OH attached to the first C atom and O...
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Use the image of chlorophyll to answer the question. An illustration shows the structure of the chlorophyll molecule as a long chain of carbon atoms forming hexagonal and pentagonal structures at one end and a long tail...
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Use the periodic table to answer the question. An illustration shows the periodic table of elements. Which of the following elements are most likely to form an ionic bond? (1 point) Responses S and Cl S and Cl K and Cl K...
Asked by jaun 1 answer
Hydrogen is in Group 1 of the periodic table. Which kind of bond would form between two hydrogens?(1 point) Responses A metallic bond would form because both atoms are metals. A metallic bond would form because both atom...
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How did the study of the atom contribute to our understanding of the periodic table of the elements?(1 point) Responses Atoms are representative of elements, so scientists scaled up atomic characteristics to understand e...
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Which is considered a dwelling coverage? (1 point) Responses It provides financial protection in case someone else is hurt and/or injured on your property for which you are found liable. It provides financial protection...
Asked by ? 1 answer
Why is it important to cite empirical evidence when making claims or justifying an interpretation?(1 point) Responses Evidence shapes a claim or interpretation. Evidence shapes a claim or interpretation. Evidence is foun...
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What is life insurance?(1 point) Responses It is often sponsored by the employer as part of benefits and provides protection to an employee while they cannot work and therefore earn enough money. It is often sponsored by...
Asked by ? 1 answer
Use the sentence to answer the question. Light is affected by gravity. Which inference can be made based on this fact? (1 point) Responses Stronger gravity causes an increase in light. Stronger gravity causes an increase...
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You read a social media post making a claim. How do you identify its trustworthiness?(1 point) Responses Its trustworthiness depends on the social media website; certain social media posts are not trustworthy. Its trustw...
Asked by jaun 1 answer