Describing Matter

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Kim puts an ice cube in a beaker and it melts. This is a good example of:

• a physical change.
• a chemical change.
• an experiment.
• an analysis.

Which is a physical change?

• burning match 
• vinegar in baking soda 
• melting butter
• cooking an egg

Tags

NGSS.MS-PS1-4

Which is a Chemical property?

• Thermal Conductivity 
• Density
• Malleability 
• Flammability 

Tags

NGSS.HS-PS1-2

Which of the following is a chemical property of water?

• Reacts with pure sodium.
• Boils at 100 ^oC.
• Dissolves sugar easily. 
• Has a density of 1 gm/mL

Which of the following is NOT a physical property?

• breaking a window
• color
• denisty
• freezing point

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

Which of the following is an intensive physical property?

• flammability

• density

• mass

• energy