Energy package

Question 1

Name 3 types of energy?

Answer 1

Solar, Radiant, chemical, thermal, nuclear, Mechanical, hydraulic, Electrical, wind, sound.

Question 2

What is mechanical energy?

Answer 2

Energy of motion

Question 3

What is radiant energy?

Answer 3

energy from the electromagnetic spectrum

Question 4

What is chemical energy?

Answer 4

energy in the bonds between atoms

Question 5

What is solar energy?

Answer 5

energy from photons

Question 6

what is thermal energy?

Answer 6

Energy from particles in motions

Question 7

What is nuclear energy

Answer 7

Energy inside the nucleus

Question 8

What does the law of conservation of energy dictate?

Answer 8

The law of conservation of energy states that energy can neither be
created nor destroyed; it can only be transferred or transformed. Energy

Question 9

If you eat a hamburger what is the transfer of energy?

Answer 9

chemical to mechanical

Question 10

What effects the amount of energy in thermal energy?

Answer 10

the amount of energy produced depends on the number of particles in
a substance. The more particles (higher mass), the more heat energy; the less
particles (lower mass), the less heat energy.

Question 11

Heat transfers how?

Answer 11

From high tempurature to low tempurature

Question 12

(Est) What is an endothermic reactions

Answer 12

Endothermic reactions require a constant source of energy
(think of a cake baking). The energy absorbed by an endothermic reaction is taken from its
environment, therefore causing the environment’s temperature to drop.

Question 13

What is an exothermic reaction?

Answer 13

Exothermic reactions need energy to start, but then they can continue on
their own. The energy released by an exothermic reaction is dissipated in the
surrounding the environment,thus causing its temperature to rise.

Question 14

What would be an example of an exothermic reaction?

Answer 14

Cellular resperation

Question 15

What would be an example of an endothermic reaction?

Answer 15

Photosynthesis

Question 16

Do all substances heat up at the same rate?

Answer 16

N0, When two different substances are heated, their temperatures increase, but
not at the same rate. Specific heat capacity is the thermal energy required to
make 1 g of the substance increase by 1 degree Celcius. This property is a
characteristic property. Therefore, it is unique to each substance.

Question 17

What is the variation in thermal energy of 20 kg of bathwater if its temperature
falls from 30 to 27?

Answer 17

-251400j

Question 18

A lab test shows that a maple log with a mass of 800 g must absorb 457600 J of
energy to catch fire. What change of temperature must the log undergo to catch
fire?
Is this an endothermic reaction or an exothermic reaction?

Answer 18

This is the case of an endothermic reaction since the heat energy (Q) is positive.
If the temperature increased (positive temperature difference), it means that the
reaction absorbed thermal energy, therefore it is an endothermic reaction.