Lesson 3: What's in a bath bomb that is producing the gas?

Which of the following is a physical property that can be used to distinguish one substance from another?

• Melting point

• Cost

• Logo

• Packaging

Tags

NGSS.MS-PS1-4

What does the term "property" refer to in scientific communities?

• Characteristics of matter that change with sample size

• Characteristics of a substance that do not change

• The cost of a substance

• The location where a substance is found

Tags

NGSS.MS-PS1-2

Which observation was made when each ingredient in the bath bomb was added to water individually?

• Each ingredient produced bubbles

• None of the substances made bubbles when added to water

• All ingredients changed color

• Each ingredient melted instantly

Tags

NGSS.MS-PS1-2

Harper is trying to identify the ingredients in her homemade bath bombs. Which of the following is NOT a characteristic property she should use for identifying the ingredients?

• Texture

• Solubility

• Melting point

• Price

What does it mean if a substance is "insoluble" in water?

• It dissolves completely in water

• It changes color in water

• It does not dissolve in water

• It produces bubbles in water

Which of the following best describes a pure substance in science?

• A material with a uniform and definite composition.

• A mixture of different elements and compounds.

• A solution that can be separated by filtration.

• A solid that melts at room temperature.

What is a mixture?

• A blend of two or more substances.

• A single pure substance.

• A type of gas.

• A chemical reaction.

Why is it important to record the state of matter at room temperature?

• Because temperature affects the state of matter.

• Because it makes the data look neat.

• Because it is easier to remember.

• Because all substances are solid at room temperature.

Tags

NGSS.MS-PS1-4

What change do you observe in coconut oil when you leave it on your palm for a while?

• It melts.

• It freezes.

• It evaporates.

• It turns into a gas.

Tags

NGSS.MS-PS1-4

How does the melting point for coconut oil compare to room temperature?

• The melting point is lower than room temperature.

• The melting point is the same as room temperature.

• The melting point is higher than room temperature.

• The melting point is unrelated to room temperature.

Tags

NGSS.MS-PS1-4