When baking soda and vinegar react, the product includes bubbles. What has MOST LIKELY occurred?

• gas formation

• exothermic reaction

• precipitate formation

Tags

NGSS.MS-PS1-2

What is the BEST way to measure the gas produced in a chemical reaction?

• Perform the experiment in a beaker.

• Perform the experiment in a room.

• Perform the experiment in a closed system.

Tags

NGSS.HS-PS3-4

Two clear solutions are mixed together in a beaker. Which result would indicate a chemical reaction had occurred between these solutions?

• increase of volume in the beaker

• decrease of volume in the beaker

• increase in temperature of the beaker

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

When a marshmallow is toasted over a fire, which is the BEST description for what happens to the outside of the marshmallow?

• chemical change

• physical change

• enzyme creation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which BEST demonstrates a physical change?

• change in temperature

• formation of a gas

• change in state

Tags

NGSS.MS-PS1-4

• 6.0 mL

• 20.0 mL

• 26.0 mL

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Liquids placed in a beaker will settle in specific layers. Which physical property of matter does this illustrate?

• density

• polarity

• solubility

• malleability

A piece of paper burns, producing heat and light. Which BEST describes the process of burning?

• Burning is a physical change. The paper mixes with oxygen in the air, producing heat and light.

• Burning is a chemical change. The paper reacts with oxygen in the air, producing heat and light.

• Burning is a physical change. The paper changes from a solid to a gas, producing heat and light.

• Burning is a chemical change. The paper breaks down in sunlight, producing heat and light.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which describes the change in the mass of water during the freezing process?

• It stays the same.

• It increases as the volume increases.

• It decreases as the volume increases.

• It decreases as the volume decreases.

What chemical reaction results in the formation of a solid?

• acid base reaction

• endothermic

• precipitate

Tags

NGSS.MS-PS1-2