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A piece of paper burns, producing heat and light. Which best describes the process of burning?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
When an organism oxides food, some of the energy is lost. Which best explains the loss of energy?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
Which best describes the purpose of food?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
Which best represents a physical change?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
Which contains nitrogen and is obtained from the food they ingest?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
Two substances react and the mass is recorded. The mass of the products does not equal the mass of the reactants. Which is the best explanation for the difference in the masses?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
How would the absence of sunlight affect a plant's ability to grow?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
A piece of paper has a mass of 17 grams. When the paper is burned, a chemical change occurs, and both smoke and ashes are produced. Based on the law of conservation of mass, which statement is true?
Burning is a chemical change. The paper reacts with the oxygen in the air, producing heat and light.
The smoke and ash have a combined mass of 17 grams.
the plant could not produce food through photosynthesis
energy is released as heat
to provide fuel for cell processes
Gas was produced and lost to the environment.
protein
condensation
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