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Chemistry > Introducton To Energy > Flashcards

Introducton To Energy Flashcards

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1
Q

In science, what is energy?

A

The ability to cause change

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2
Q

What are the 2 general types of energy?

A

Kinetic and Potential Energy

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3
Q

What is kinetic energy?

A

The energy of an object due to motion

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4
Q

What does the amount of KE an object has depend on?

A

Mass and Speed

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5
Q

KE increases as ________ increases

A

Mass

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6
Q

KE increases as _________ increases

A

Speed

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7
Q

If a bowling ball and soccer ball roll on the floor at the same speed which has more KE and why?

A

Bowling ball; bcuz it has more mass

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8
Q

If a bowling ball and soccer ball roll on the floor and have the same mass with different speeds, which has more KE and why?

A

The one with more speed

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9
Q

What’s potential energy?

A

The energy and object has due to its position, condition, or chemical composition

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10
Q

What is GPE?

A

PE that is the result of an object’s position

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11
Q

Can change in condition affect PE?

A

YES OFC DA

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12
Q

Chemical PE depends on?

A

Chemical composition

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13
Q

As bonds break and new bonds between atoms form during a chemical change, energy can be _________

A

Released

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14
Q

Can an object have PE and KE at the same time?

A

Yass ofc

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15
Q

What are some common forms of energy?

A

Mechanical, sound, electromagnetic, electrical, chemical, thermal, and nuclear

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16
Q

Energy is expressed in

A

JOULES

17
Q

What is mechanical energy the sum of?

A

The sum of an objects KE and PE.

18
Q

Mechanical energy is the energy of?

A

Motion and Position

19
Q

An objects mechanical energy can be all ___, all _____, or a combination of both

A

KE;PE

20
Q

What is Sound energy?

A

Sound energy is kinetic energy caused by the vibration of particles in a medium such as steel, water, or air.

21
Q

As the particles vibrate, they transfer the sound energy to other ___________.

A

Particles

22
Q

Why do we hear sound?

A

Bcuz of special structures in our ears detect the vibrations of the particles in the air.

23
Q

How is electromagnetic energy transmitted?

A

Thru space in the form of electromagnetic waves

24
Q

What causes electromagnetic waves?

A

By the vibrations of electrically charged particles

25
Q

Give me examples of electromagnetic waves

A

Visible light, x-rays, and microwaves

26
Q

What does electrical energy result from?

A

The position or motion of the charged particles.

27
Q

The electricity that powers the lights overhead, is associated with?

A

Negatively charged particles moving in a wire. (The wire also has positively charged particles that don’t move)

28
Q

Chemical energy is a form of ________ energy

A

PE

29
Q

The amount of chemical energy in a molecule depends on ………………………………………

A

The kinds of atoms and their arrangements

30
Q

What are some sources of chemical energy?

A

Foods we eat, batteries, matches

31
Q

What is TE?

A

The KE of the particles in an object

32
Q

Particles move _____ at a higher temperature than at lower temperatures

A

Faster

33
Q

The _______ the molecules in an object move, the more ________________________ the object has.

A

Faster; TE

34
Q

The more particles an object has the more ____________________ it has.

A

TE

35
Q

What is the source of nuclear energy?

A

The nucleus of an atom

36
Q

When does energy transformation take place?

A

When energy changes from one from to another

37
Q

Can all energy only change into one type of energy?

A

No; Any form of energy can change into any other form of energy

38
Q

What is a closed system?

A

A group of objects that transfers energy only to one another

39
Q

What does the law of conservation of energy state?

A

Energy cannot be created or destroyed only change forms

Chemistry (3 decks)

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