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AP Chemistry > Chapter 1-4 > Flashcards

Chapter 1-4 Flashcards

0
Q

Heterogeneous

A

Different

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1
Q

The study of matter and the changes it undergoes

A

Chemistry

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2
Q

Homogeneous

A

The same or uniform

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3
Q

2 or more substances heterogeneously combined having a variable composition

A

Mixture

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4
Q

2 or more substances homogeneously combined having a variable composition

A

Solution

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5
Q

Suspension

A

Particles will eventually settle at the bottom

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6
Q

Colloid

A

Particles are too small to settle

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7
Q

Tyndall effect

A

Light scattering effect of colloids

Capable to see light beam

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8
Q

2 or more elements chemically bonded having a constant composition

A

Compound

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9
Q

One type of atom

A

Element

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10
Q

Process that alters the composition of a substance

A

Chemical change

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11
Q

How are compounds separated

A

By chemical changes

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12
Q

Process that alters the appearance of a substance

A

Physical change

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13
Q

What are phase changes considered

A

Physical

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14
Q

How are mixtures and suspensions separated

A

By physical changes

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15
Q

Characteristic that describes how a substance interacts with other chemicals

A

Chemical properties

16
Q

Characteristic of a substance you can determine with the 5 senses

A

Physical properties

17
Q

What are some ex of physical properties

A

Melting point
Boiling point
Density

18
Q

Property that is independent of the sample size

A

Intensive property

19
Q

Property that varies with the sample size

A

Extensive property

20
Q

Ex of intensive properties

A 
Melting point
Boiling point
Freezing point 
Density
Temperature
21
Q

Ex of extensive property

A

Heat

22
Q

Smallest part of a compound

A

Molecule

23
Q

When all molecular energy stops
0 kelvin
-273 degrees Celsius

A

Absolute zero

24
Q

How do molecules have energy

A

Temperature

25
Q

What is the majority of a gas

A

Empty space

26
Q

Exact number

A

Infinite amount of sig figs

A counting number

27
Q

Where is the proton located
What is it’s charge
What is it’s mass

A

Nucleus
Positive
1 amu

28
Q

Where is the neutron located
What is it’s charge
What is it’s mass

A

Nucleus
Neutral charge
1 amu

29
Q

Where is the electron located
What is it’s charge
What is it’s mass

A

Outside nucleus
Negative charge
Mass is negligible

30
Q

Atomic number

A

Number of protons

Also same as number of electrons as long as the atom is neutral

31
Q

How do you determine the number of neutrons an atom has

A

Mass number - atomic number

32
Q

Various forms of the same element having the same number of protons but different number of neutrons resulting in different masses

A

Isotope

33
Q

Weighted average of an atom

A

Mass number

AP Chemistry (5 decks)

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