Hazel Point Chemical Interactions

Which statement is true about an exothermic reaction?

• It releases energy.

• It absorbs energy.

• It requires no activation energy.

• The energy of the products is greater than the energy of the reactants.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

A(n) ________________________ is a material that slows down the rate of a chemical reaction.

• inhibitor

• activation energy

• enzyme

• exothermic

Tags

NGSS.HS-PS1-5

Reactions that release energy are called _________________.

• inhibitor

• endothermic

• enzyme

• exothermic

Tags

NGSS.HS-PS1-4

A precipitate is a solid formed from a solution during a chemical reaction.

• True

• False

• NO WAY! NO WAY!!

Tags

NGSS.MS-PS1-2

A chemical equation shows a chemical reaction using symbols instead of words.

• True

• False

• This is the wrong answer.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If I put a balloon on top of a water bottle filled only with air and the heat the bottle system, what will happen to the balloon?

• It will shrink

• It will inflate

• Nothing, it will stay the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Check all that apply: What is the best evidence that a chemical reaction has taken place?

• fizzing and bubbling-release of a gas

• there is no color change

• temperature change

• can see the substance settling in the bottom of the liquid

• color change

Tags

NGSS.MS-PS1-2

What type of chemical interaction occurs at Hazel Point when two substances combine to form a new compound?

• Covalent bonding

• Ionic bonding

• Metallic bonding

• Hydrogen bonding

Tags

NGSS.MS-PS1-1

Which of the following best describes the role of a catalyst in chemical interactions at Hazel Point?

• Increases the activation energy

• Decreases the activation energy

• Changes the equilibrium position

• Is consumed in the reaction

During an experiment at Hazel Point, a scientist observes a color change when two solutions are mixed. What does this indicate?

• A physical change

• A chemical reaction

• No reaction

• Evaporation

Tags

NGSS.MS-PS1-2