Conservation of Matter

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What is the Law of Conservation of Matter?

Back

The Law of Conservation of Matter states that matter cannot be created or destroyed in a closed system; it can only change forms.

Tags

NGSS.MS-PS1-5

Front

What happens to the mass of substances in a chemical reaction?

Back

The total mass of the reactants equals the total mass of the products.

Tags

NGSS.MS-PS1-5

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change.

Tags

NGSS.MS-PS1-2

Front

What are products in a chemical equation?

Back

Products are the substances formed as a result of a chemical reaction.

Tags

NGSS.MS-PS1-5

Front

If 50 grams of salt is dissolved in 200 grams of water, what is the mass of the solution?

Back

The mass of the solution is 250 grams.

Front

What is a closed system in the context of conservation of matter?

Back

A closed system is one where no matter enters or leaves, allowing for the conservation of mass.

Tags

NGSS.MS-PS1-5

Front

How does crushing a solid affect its mass?

Back

Crushing a solid does not change its mass; it remains the same.

Front

What is the significance of balancing chemical equations?

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Balancing chemical equations ensures that the number of atoms for each element is the same on both sides, reflecting the conservation of matter.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical change?

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An example of a physical change is melting ice; the mass remains the same before and after the change.

Tags

NGSS.MS-PS1-4

Front

What is an example of a chemical change?

Back

An example of a chemical change is burning wood; new substances are formed and mass is conserved.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5