In an exothermic reaction, heat is ...

• taken in or absorbed
• given out or released

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

In an endothermic reaction, heat is ...

• taken in or absorbed
• given out or released 

Tags

NGSS.HS-PS1-4

HCl reacts with Zn giving off heat

• endothermic
• exothermic

Tags

NGSS.HS-PS1-4

Which involves an increase in entropy? (if needed, select more than one answer)

• spraying an air freshener

• picking up apples off the ground

• dropping an egg on the floor

• arranging a deck of cards by suit

The SI unit of heat and energy is the __________.

• calorie
• heat
• joule
• celcius

Tags

NGSS.MS-PS3-4

The __________ law of thermodynamics states that entropy is always increasing.

• first

• second

• third

• fourth

Tags

NGSS.HS-PS3-4

Heat transfer [blank] occurs from hot to cold. 

• always
• never
• sometimes
• rarely

Tags

NGSS.HS-PS3-4

Which phase of matter has the greatest motion and least orderly arrangement?

• solid
• liquid
• gas

Tags

NGSS.3-PS2-1

Which phase change represents a decrease in entropy?

• solid to liquid

• gas to liquid

• liquid to gas

• solid to gas

Entropy always increases when

• enthalpy decreases.
• temperature decreases.
• temperature increases.
• volume increases.

Tags

NGSS.HS-PS3-4