Semester Test study guide Flashcards

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1
Q

Charge of an Electron

A

Negative

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2
Q

Charge of a Proton

A

Positive

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3
Q

Charge of a Neutron

A

Neutral / no charge

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4
Q

Positively charged particles made of protons and neutrons located at the center of an atom

A

Nucleus

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5
Q

Cloud around the nucleus that contains electrons

A

Electron cloud

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6
Q

States that electrons move in set orbits around the nucleus, like planets

A

Bohrs model

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7
Q

Between 1-8 and is found in the outermost shell of an atom

A

Valence electrons

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8
Q

an atom that has the same number of protons as other atoms but that has a different number of neutrons

A

Isotope

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9
Q

a substance that cannot be broken down into simpler substances by chemical means

A

Elements

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10
Q

a group of atoms that have gained or lost one or more electrons and has a positive or negative charge

A

Ion

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11
Q

Horizontal rows in the periodic table

A

Periods

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12
Q

Vertical rows in the periodic table

A

Groups

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13
Q

states that when elements are listed in order of number of protons, similarities in their properties occur in a regular pattern

A

Periodic law

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14
Q

the smallest unit of an element that maintains the properties of that element

A

atom

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15
Q

The arrangement of atoms in a substance

A

Chemical structure

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16
Q

The angle formed by two bonds of the same atom

A

Bond angle

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17
Q

The average distance between the nuclei of two bonded atoms

A

Bond length

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18
Q

Represents bond lengths and angles

A

ball and stick model

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19
Q

Only chemical symbols are used to represent the atoms

A

structural formula model

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20
Q

Shows the space occupied by atoms in a 3D space

A

Space-filling model

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21
Q

A substance made of atoms of two or more different elements that are chemically combined

A

Compound

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22
Q

How things are alike

A

Compare

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23
Q

How things are different

A

Contrast

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24
Q

A possible explanation or answer that can be tested

A

Hypothesis

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25
Q

Describes something with numbers (n=numbers)

A

Quantitative statement

26
Q

Describes something with letters (l=letters)

A

Qualitative statement

27
Q

Is useful for comparing data for several individual items or events

A

Bar graph

28
Q

Is useful or showing continuous change

A

line graph

29
Q

A prescribed decimal place that determines the amount of rounding off the be done based on the precision of the measurement

A

Significant figures

30
Q
Step 1-Make an Observation
Step 2-Research and Investigate
Step 3- Make a Hypothesis
Step 4- Plan Experiment
 Step 5- Do the Experiment
Step 6- Analyze and collect data
Step 7-Report Data
A

Scientific method and order

31
Q
Microscopes
Telescopes
Spectroscopes
Particle Accelerator
Computers
A

Scientific Tools

32
Q

A method of expressing a quantity as a number multiplied by 10 to the appropriate power,
EX.- 1.56x10^18

A

Scientific Notation

33
Q

The ability and willingness to assess claims critically and to make judgments on the basis of objective and supporting reasons. (facts)

A

Critical Thinking

34
Q

Biological Science
Physical Science
Earth Science

A

Branches of NATURAL SCIENCE

35
Q

Physics and Chemistry

A

Branches of PHYSICAL SCIENCE

36
Q

The application of science for practical purposes

A

Technology

37
Q
Evaporation- Liquid to a gas
Condensation- Gas to a liquid
Freezing- Liquid to a solid
Melting- Solid to a liquid
Deposition- gas to a solid
Sublimation- solid to a gas
A

Changes in states of matter

38
Q

The energy of motion

A

Kinetic energy

39
Q

States that for a fixed amount of gas at constant pressure, the volume of the gas decreases as its temperature increases, likewise the volume of a gas increases as its temp increases (deals with temperature and volume)

A

Charles Law

40
Q

States that the pressure of a gas increases as the temperature increases if the volume of the gas does not change

A

Gay-Lussacs Law

41
Q

The scientific study of the composition, structure, and properties of matter and the changes that matter undergoes

A

Chemistry

42
Q

The smallest unit of a substance that keeps all the physical and chemical properties of that substance

A

Molecule

43
Q

A combination of chemical symbols and numbers to represent a substance

A

Chemical formula

44
Q

The temperature and pressure at which a solid becomes a liquid

A

Melting point

45
Q

The temperature and pressure at which a liquid becomes a gas

A

Boiling point

46
Q

The ratio of the mass of a substance to the volume of a substance

A

Density

47
Q

Substances AREN’T mixed uniformly and are NOT evenly distributed

A

Heterogeneous mixture

48
Q

Substances ARE evenly distributed, and the mixture IS the same throughout

A

Homogeneous mixture

49
Q

A representation of an object or event that can be studied to understand the real object or event.

A

Model

50
Q
32e	4th
18e	3rd
8e	2nd
2e	1st
NUCLEUS
A

Electron levels

51
Q

Is a region in an atom where there is a high probability of finding electrons

A

Orbitals

52
Q

are formed between oppositely charged ions

A

Ionic bond

53
Q

a bond formed when atoms share one or more pairs of electrons

A

Covalent bond

54
Q

a bond formed by the attraction between positively charged metal ions and the electrons around them

A

Metallic bond

55
Q

an ion made of two or more atoms

A

Polyatomic ion

56
Q

Bonds in which atoms share electrons equally

A

Nonpolar covalent bond

57
Q

forms an unequal sharing of electrons

A

Polar covalent bond

58
Q

positively charged ion

A

Cation

59
Q

negatively charged ion

A

Anion

60
Q

Gram- Mass
Mole- Amount of Substance
Liter- Volume
Meter- Length

A

Units of Measurement