Calorimetry

Presentation

•

Science, Chemistry

•

10th - 12th Grade

•

Medium

•

NGSS

MS-PS3-4, MS-PS3-5, MS-LS1-6

Standards-aligned

Andrew Baldwin

Used 13+ times

FREE Resource

9 Slides • 15 Questions

Calorimetry

By Andrew Baldwin

Multiple Choice

What type of energy transformation occurs, when a hawk eats a mouse and then uses the energy from the mouse to fly?

mechanical energy to chemical energy

thermal energy to mechanical energy

chemical energy to mechanical energy

mechanical energy to thermal energy

Multiple Choice

A hairdryer converts --

electrical energy into chemical

electrical energy into thermal

chemical energy into mechanical

thermal energy into mechanical

Multiple Choice

What type of energy is stored in batteries or food?

Potential energy

Thermal energy

Chemical energy

Mechanical energy

Multiple Choice

When iron nails get rusty, heat is released. What process is this?

Exothermic

Endothermic

Multiple Choice

Heat transfers from an area of ____temperature to an area of ___ temperature.

high to low

low to high

high to high

It can travel high to low and low to high.

Multiple Choice

What would likely happen if you were to touch the flask in which an exothermic reaction was occurring?

The flask would feel cooler

The flask would feel warmer

The flask would feel the same before and after a reaction

None of the above

Multiple Choice

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

The temperature changed

It is an endothermic reaction

It is an exothermic reaction

Two of the answers are correct

Multiple Choice

If the enthalpy ter (ΔH) is negative the reaction is ____.

Endothermic

Exothermic

Neutral

Multiple Choice

What is the PE of the reactants?

40 kJ

20 kJ

100 kJ

60 kJ

Multiple Choice

What is the energy of the activated complex?

75 kJ

225 kJ

300 kJ

225 kJ

Poll

Rate your Confidence

I got this

I understand

It makes sense

I am lost

Multiple Choice

If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL ____________

one reaches a temperature of zero

they both have an equal temperature

one runs out of energy

Multiple Choice

What is the specific heat of an unknown substance if 100.0 g of it at 200.0 °C reaches an equilibrium temperature of 27.1 °C when it comes in contact with a calorimeter of water. The water weighs 75. g and had an initial temperature of 20.00 °C? (Specific heat of water is 4.18 J/g°C) (show your work)

0.111 J/g°C

1.29 J/g°C

0.129 J/g°C

22225.85 J

Multiple Choice

A sample of iron receives 50.J of heat energy that raises the temperature of the iron by 25.0°C. If the iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample? (show your work)

25g

30g

20g

50g

Poll

Rate your confidence

This is a cakewalk.

That's it. Ok

I mean, it makes sense

Run that back one more time.

Calorimetry

By Andrew Baldwin

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