Chem I: 17.1 Thermochemistry

What are the two units for Heat?

• cal and joules
• cal and grams
• joules and celcius
• there is only one

Endothermic reactions feel

• warm
• cold

Tags

NGSS.HS-PS1-4

Exothermic reactions feel

• warm
• cold

Tags

NGSS.HS-PS1-4

energy in endothermic reactions are

• released
• ended
• absorbed

Tags

NGSS.HS-PS1-4

energy in exothermic reactions are

• released
• absorbed

Tags

NGSS.HS-PS1-4

Heat flows from _______ to ______ objects

• cooler to warmer
• warmer to warmer
• warmer to cooler
• cooler to cooler

Tags

NGSS.HS-PS3-4

q stands for which variable

• heat
• mass
• specific heat
• change in temperature

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The variable C stands for what

• heat 
• mass
• specific heat
• change in temperature

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

For the formula:
 Q= m c ∆T
The  units for specific heat are:

• g /J C
• °C/g J
• kJ/g
• J/g°C

Is freezing endothermic or exothermic?

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4