Unit 3 Quizizz

Which state of H₂O  has the greatest kinetic energy?

• Ice
• Water
• Vapor

Tags

NGSS.MS-PS1-4

When you place the metal in boiling water, heat flows from the _________ to the _______.

• metal to the boiling water

• bottom of the metal to the top half of the metal

• bottom of the water to the top of the water

• boiling water to the metal

Tags

NGSS.HS-PS3-4

Specific Heat is..

• the temperature initial minus temperature final

• the amount of heat/energy required to raise 1 gram of a substance by 1°C

• the temperature final minus temperature initial

• the item in a system with given weight in grams

Tags

NGSS.HS-PS3-2

YOU HAVE TIME!

How much energy is needed to raise the temperature of a 20.0g piece of copper from 15.0 degrees Celsius to 25.0 degrees Celsius? (The specific heat of copper is 0.385 J/g C)

• 20 X (25-15) =70 J

• 20 X .385 X (25-15)= 77 J

• 20 X .385 X (15-25)= 62 J

• 20 X .385 X (15-0)= 77 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mHf

• Q= ½mv
• Q=mHv

How much heat is required to increase the temperature of 1,200. g of water from 23.0 °C to 39.0 °C?

• 19,200 J

• 80.256 J

• 80,300 J

• 5,344 J

Tags

NGSS.HS-PS3-4

If 980. J of energy is added to 6.20 g of water at 18.0 °C, what is the final temperature of the water?

• 37.8 °C

• -19.8 °C

• 19.8 °C

• 55.8 °C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

How much heat is needed to change 12 grams of ice at 0 ºC to 12 grams of water at 0ºC?

• Q = 12 x 4.18 x 0

• Q = 12 x 334

• Q = 12000 x 334

In heat capacity equations, what does the triangle represent?

• Temperature

• energy

• mass

• change in

• change in temp

How many Joules of energy are required to make 50.0 grams of ice at 0 ^οC completely melt?

• 334 J

• 113,000 J

• 33,400 J

• 16,700 J

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4