Ms Ps1 6

Is this endothermic or exothermic?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

Is this endothermic or exothermic?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

Is this endothermic or exothermic?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

When solid sodium bicarbonate was added to citric acid solution (Lab: Energy In, Energy out), the temperature decreased from 22°C to 10°C. Which description accurately models what happened?

• reactants + energy --> products

• reactants --> products + energy

• reactants + products = energy

• reactants --> energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Did you know this is how a glow stick works? Pretty cool stuff! What is the best evidence that this is an exothermic reaction?

• light and small amounts of heat are given off

• color change

• popping noise as the glass inside it breaks

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Which are true for exothermic reactions?

(select ALL that apply)

• energy is absorbed to break bonds

• energy is given off to form new bonds

• more energy is absorbed than given off

• more energy is given off than is absorbed

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Which are true for endothermic reactions?

(select ALL that apply)

• energy is absorbed to break bonds

• energy is given off to form new bonds

• more energy is absorbed than given off

• more energy is given off than is absorbed

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Which is true for the citric acid solution?

• more energy is absorbed

• more energy is released

• energy is used up

• energy is created

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

Which is true for the sodium bicarbonate solution?

• more energy is absorbed

• more energy is released

• energy is used up

• energy is created

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

A chemical reaction in which more energy is released when the products form than is required to break the bonds in the reactants.

• exothermic reaction

• endothermic reaction

• chemical reaction

• conservation of energy

Tags

NGSS.HS-PS1-4