Unit 4 Lesson 1 Chemical Reactions Test Review

Front

Which property should be used to identify a mysterious liquid?

Back

density

Front

Avery and Jackson are in the lab, observing a chemical reaction. Which statement correctly describes the magical transformation of the reactants into the products?

Back

The atoms in the reactants were regrouped into different molecules to form the products.

Front

Which process is an example of a chemical change where matter and energy are transformed?

Back

Noah adds an antacid tablet to water and bubbles are produced.

Front

Scarlett is separating a mixture of iron filings, sand, and salt using a magnet, boiling water, and a filter. What method does she use?

Back

Scarlett uses only physical changes to separate the mixture’s components.

Front

Evelyn and Kai boil water until it all disappears into steam. What type of change is happening here?

Back

Physical Change

Front

Kai and Evelyn are in the kitchen experimenting with sugar. They heat it until it turns black and smoky. What kind of magical transformation is happening here?

Back

Chemical Reaction

Front

What kind of change occurs when salt is sprinkled on ice and it melts?

Back

Physical Change

Front

Evelyn and Jackson are making candles by pouring molten wax into a mold and watching it become solid. What type of change is happening here?

Back

Physical Change

Front

Which property can be used to identify substances?

Back

Physical property

Front

Is mixing substances in a science lab a test of a physical property or a chemical property?

Back

Chemical property