Unit 4 Lesson 1 Chemical Reactions Test Review

Luna, Mason, and Zoe are on a treasure hunt and they find a mysterious liquid. Which property should they use to identify the substance?

• mass

• weight

• density

• volume

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

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

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

Elijah and Avery are conducting a fun science experiment. Which process is an example of a chemical change where matter and energy are transformed?

• Elijah crushes an aspirin tablet into a fine powder.

• Avery notices water droplets forming on the outside of her cold drink glass.

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

In the laboratory, Scarlett is on a mission to separate a quirky mixture of iron filings, sand, and salt. Armed with a magnet, boiling water, and a filter, she embarks on her scientific adventure. Which statement best describes Scarlett's method of separating this mixture?

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

• Scarlett uses only chemical reactions to separate the mixture’s components.

• Scarlett uses both physical changes and chemical reactions to separate the mixture’s components.

Evelyn and Kai are having a fun science experiment in the kitchen. They boil water until it all disappears into steam. What type of change is happening here?

• Physical Change

• Chemical Reaction

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?

• Physical Change

• Chemical Reaction

Kai and Grace are having a snow day experiment! They sprinkle salt on ice and watch it melt. What kind of change is happening here?

• Physical Change

• Chemical Reaction

Evelyn and Jackson are making candles for a fun science project. They pour molten wax into a mold and watch it become solid. What type of change is happening here?

• Physical Change

• Chemical Reaction

Zoe and Michael are on a science adventure! They need to figure out if the description is testing a physical property or a chemical property. Can you help them decide which property can be used to identify substances?

• Physical property

• Chemical property

• Both Physical and Chemical properties

Evelyn and Noah are in the science lab, and they love mixing potions! They wonder if the property they're observing can be determined by mixing substances. Is it a test of a physical property or a chemical property?

• Physical property

• Chemical property

• Both Physical and Chemical properties