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2023 Test Cons. of Mass and Physical and Chem Change

Last updated almost 3 years ago
20 questions
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2

The arrow (yield sign) in a chemical equation represent what?

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2

The compounds to the left of the arrow are called the...

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2

The compounds to the right of the arrow are called the...

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2

How many hydrogen atoms are in the reactant above?

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2

How many oxygen atoms are in the reactant above?

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2

How many oxygen atoms are in the product above?

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2

How many hydrogen atoms are in the product above?

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2

Is the chemical equation balanced or unbalanced?

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2

In the picture above, the coefficent is represented what number?

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2

In the picture above, the subscript is represented by the number...

2

The Law of Conservation of Matter states that:

2

Before a chemical reaction, the total mass of two reactants is measured to be 40 grams. After the reaction, what should be the total mass of the products?

2

What happens to the atoms in a chemical reaction?

2

Copper chloride and aluminum react to produce aluminum chloride and copper. Which of the following is the correctly balanced chemical equation for this reaction? (Hint: It's the only balanced equation)

2

Hydrogen and oxygen react to produce water. Which of the following is the correctly balanced chemical equation for this reaction?

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1

Water heating and turning into steam is a ___________ change.

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1

Iron rusting is a ___________ change.

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3

Select all of the pictures that represent a chemical change.

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3

Select all examples of chemical changes.

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5

What are the 5 evidences of a chemical change? (CHOOSE FIVE)