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Biblioteka

Thermal Energy

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Posljednje ažuriranje over 1 year ago
23 questions
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Pitanje 1
1.

What is true about samples that are cold? (Select all that apply)

Pitanje 2
2.

What is true about samples that are warm? (Select all that apply)

Pitanje 3
3.

Claire has been sledding outside in the cold weather and her fingers are cold. She comes inside and puts her hands around a hot mug of tea. The energy of the molecules in her fingers increases. What must be true about the energy in the molecules in the mug?

Pitanje 4
4.

What is the total thermal energy of the sample?

Pitanje 5
5.

What is the average temperature of the sample?

Pitanje 6
6.

Match the following

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

Temperature

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Total

Thermal Energy

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Average

Pitanje 7
7.

The molecules a sample has, the more __________________ it has.

Pitanje 8
8.

Which pan has a higher temperature?

Pitanje 9
9.

Which pan has a higher total energy?

Pitanje 10
10.
Pitanje 11
11.

What are the steps of energy transfer? Put step one at the top!

  1. The two samples reach equilibrium

  2. The molecules collide

  3. Energy transfers from the hot sample to the cold sample

  4. Energy stops being transferred

Pitanje 12
12.

What would be the equilibrium point of the two objects below?

Object A: 700 molecules each with 52 kJ of energy

Object B: 1500 molecules each with 30 kJ of energy

Pitanje 13
13.

Thermal energy and temperature are a measure of the same thing.

Pitanje 14
14.

Which way does heat transfer between hot and cold objects?

Pitanje 15
15.

What happens when ice is placed in warm water?

Pitanje 16
16.

When a hot metal rod touches ice, energy transfers to...

Pitanje 17
17.

What happens when you place a warm drink in a fridge?

Pitanje 18
18.

When you touch a warm stove, heat transfers how?

Pitanje 19
19.

At what temperatures do these gases have similar speeds?

Pitanje 20
20.

Identify materials likely to have equal molecular speeds.

Pitanje 21
21.

What occurs during an exothermic reaction?

Pitanje 22
22.

What is true about endothermic reactions?

Pitanje 23
23.

At what temperature do molecules have the highest kinetic energy?