Chapter 7 Foundations of Chemistry Study Guide Flashcards

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1
Q

Matter

A

Anything that has mass and takes up space

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2
Q

Substance

A

A single kind of matter that is pure

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3
Q

Element

A

A pure substance that cannot be broken down into another substance by chemical or physical means.

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4
Q

Atom

A

The smallest piece of an element

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5
Q

Molecule

A

Are formed when groups of two or more atoms create chemical bonds between one another

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6
Q

Compound

A

Made from two or more elements

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7
Q

Mixture

A

Are not pure substances

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8
Q

Mass

A

The amount of matter in an object

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9
Q

The law of Conservation of Mass\Matter

A

Matter is not created nor is it destroyed during a chemical or physical change

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10
Q

Energy

A

The ability to do work or cause change

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11
Q

Kinetic Energy

A

Energy of moving things

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12
Q

Potential Energy

A

Energy stored in an object because of its position

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13
Q

Physical Change

A

Any change that results in a change in shape or form

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14
Q

Chemical Change

A

Happens when a substance is transformed into a different substance

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15
Q

difference between a physical and chemical property

A

Chemical - ability to change into different substance
Physical - without changing into another substance

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16
Q

Chemical properties example

A

Burning wood, rusting, mold

17
Q

Physical properties example

A

Freezing\Boiling point, Hardness, Texture, Color

18
Q

Difference between mixture and a compound

A

Each substance in a mixture keeps its individual properties

19
Q

Mixture examples

A

Soil, Air, Brass

20
Q

Compound examples

A

Water, sodium chlorine, Alcohol

21
Q

What are some ways to separate a mixture

A

Magnetism, Filtering, Distillation, Evaporation

22
Q

Compare and contrast mass and weight

A

Similarities - They can both be measured,
Differences - mass will never change no matter where you are
weight can change depending on the force of gravity

23
Q

Volume formula

A

Length x Width x Height

24
Q

Density formula

A

Mass divided by Volume

25
Q

4 states of matter

A

Solids, Liquids, Gas, Plasma

26
Q

physical change cycle

A

solids melt to liquid, liquid evaporates to gas, gas condenses to liquid, liquid freezes to solid,
note ; Liquids CAN turn directly to gas ( Sublimation )

27
Q

differences between thermal energy and temperature

A

Temperature is the movement of particles and T.E is how much or little they move

28
Q

difference between an endothermic and exothermic change.

A

endothermic is when energy is taken in and exothermic is when energy is given off

29
Q

5 types of energy

A

Potential Energy, Kinetic Energy, Chemical Energy, Electromagnetic Energy, Electrical Energy.

30
Q

Differences between the 5 types of energy

A

Potential-stores energy due to position
Chemical- stores energy in chemical bonds
Kinetic-energy that moves things
Electromagnetic - travels through space as waves
Electrical - charges particles that are moving

31
Q

how are the particles of matter arranged in all four states of matter.

A

Solid - particles are packed together tightly
Liquid - particles are spread slightly more than solid
Gas - particles are the furthest apart
Plasma - not fixed in place (varys)