Chemical Reactions

Front

What is evidence of a chemical reaction?

Back

Evidence of a chemical reaction is anything that shows a new substance has formed.

Front

What indicates a new substance was formed when two clear liquids are mixed?

Back

A yellow solid forms and then settles to the bottom of the beaker.

Front

What is a precipitate?

Back

A precipitate is a solid that forms when two liquids are mixed.

Front

What do we call everything to the right of the arrow in a chemical reaction?

Back

Products.

Front

If Mr. Brady starts with 15 grams of mass in a chemical reaction, how much mass should he end with?

Back

15 grams.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products).

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What does a change in color during a reaction indicate?

Back

It may indicate that a new substance has formed.