Day 13 Exit Ticket- Energy and Heat calculations

The measure of average kinetic energy of all the particles within an object is called ____________. 

• temperature
• conduction
• radiation
• heat 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

When you measure the temperature of hot soup, you are measuring the:

• thermal energy given off by the bowl
• specific heat of the bowl
• average kinetic energy of the particles in the soup
• thermal expansion of the particles in the soup

Tags

NGSS.HS-PS3-2

If the particles of two substances have the same average kinetic energy, then___.

• the specific heats of the substances are identical 
• the particles will not react chemically
• the substances have equal thermal energies
• the substances have equal temperatures

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

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

• 0.46 J/g^oC

• 1.654 J/g^oC

• 2,567,446.875 J/g^oC

Tags

NGSS.HS-PS3-1

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C, if the specific heat of aluminum is 0.903 J/g°C?

• 298 Joules

• 0.003 Joules

• 297 J/g°C

• 0.003 J/g°C

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The law of conservation of energy states that

• energy can be created or destroyed

• energy cannot be created or destroyed

• energy can be potential or kinetic only

• heat energy is kinetic energy

Jenny poured some hot chocolate into a cup and stirred it with a room temperature metal spoon. She noticed the spoon got really warm after being in the hot chocolate. She also noticed that the hot chocolate got cooler. What is the best explanation for this?

• The spoon gave its cold temperature to the hot chocolate.

• The spoon did not affect the hot chocolate at all.

• The heat from the hot chocolate stayed in the cup.

• The heat from the hot chocolate went into the spoon warming it up.

A cup of ice in water is sitting on a table.

In the cup the ice is experiencing a ??????? reaction while the water is experiencing a ???????? reaction

• endothermic, exothermic

• exothermic, endothermic

• endothermic, endothermic

• exothermic, exothermic