Exam 1

Question 1

Anything that has mass and takes up space.

Answer 1

Matter

Question 2

Properties of matter:

Answer 2

General and specific

Question 3

What are the general property of matter?

Answer 3

Mass, inertia, volume, weight and density

Question 4

What are the specific property of matter?

Answer 4

Physical, chemical, intensive and extensive

Question 5

Is the amount of matter of an object.

Answer 5

mass

Question 6

Is the resistance of an object to move from its original place.

Answer 6

Inertia

Question 7

Amount of matter in a specific space.

Answer 7

volume

Question 8

Mass with the influence.

Answer 8

Weight

Question 9

Amount of mass per volume.

Answer 9

density

Question 10

Characteristics that you can see and touch.

Answer 10

Physical

Question 11

Ability of a substance.

Answer 11

chemical

Question 12

Characteristics that depend on the amount of matter.

Answer 12

Intensive

Question 13

Characteristics that doesn’t depend on the amount of matter.

Answer 13

Extensive

Question 14

Physical change:

Answer 14

The original matter can be recovered, matter is the same.

Question 15

chemical change:

Answer 15

The old matter is no longer present and cannot be reverted.

Question 16

Retains a fixed volume and shape, little free spa e between particles, rigid: particles cannot move.

Answer 16

Solid

Question 17

Assumes the shape of part of the container which it occupies.

Answer 17

Liquid

Question 18

Is made by combustion, sun, neon lights.

Answer 18

Plasma

Question 19

Very low temperatures, molecules with a minimum level of energy, molecules made a superatom.

Answer 19

Bose-Einstein condensate

Question 20

Solid to liquid

Answer 20

Melting

Question 21

Liquid to solid

Answer 21

Freezing

Question 22

Solid to gas

Answer 22

Sublimation

Question 23

Gas to solid

Answer 23

Deposition

Question 24

Gas to liquid

Answer 24

condensation

Question 25

Liquid to gas

Answer 25

evaporation

Question 26

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

Answer 26

elements

Question 27

Substances made up of two or more elements chemically combined.

Answer 27

Compound

Question 28

A single kind of matter with a specific composition and properties.

Answer 28

Pure substance

Question 29

Physical combination of two or more substances in which they retain their distinct identifies.

Answer 29

Mixture

Question 30

Is made up of only one phase solutions.

Answer 30

Homogeneous

Question 31

Is made up of more than one phase.

Answer 31

heterogeneous

Question 32

Is a well-mixed mixture that contains a solvent and at least one solute.

Answer 32

Solution

Question 33

Types of solutions:

Answer 33

Unsaturated solution, Saturated solution and supersaturated solution

Question 34

Is when you can dissolve more solute.

Answer 34

Unsaturated solution

Question 35

No more solute can be dissolved

Answer 35

saturated solution

Question 36

It has more dissolved solute that the one solute.

Answer 36

supersaturated solution

Question 37

Amount of solute dissolved in certain amount of solvent.

Answer 37

concentration

Question 38

Measure of how much solute can dissolve in a solvent at a given temperature.

Answer 38

Solubility

Question 39

Mixture containing small, undissolved particles that do not settle out.

Answer 39

colloid

Question 40

Mixture in which particles can be seen and easily separated by setting or filtration.

Answer 40

suspension

Question 41

Tentative, testable statement of prediction about what has been observed.

Answer 41

Hypothesis

Question 42

Set of controlled observations that test the hypothesis.

Answer 42

Experiments

Question 43

Set of controlled observations that test the hypothesis.

Answer 43

Variables

Question 44

What are the variables?

Answer 44

Independent and dependent

Question 45

Variable that you plan.

Answer 45

independent

Question 46

Its value changes in response to the independent variable, you doesn't plan.

Answer 46

Dependent

Question 47

A judgement based on the information obtained.

Answer 47

Conclusions

Question 48

Explanation of a natural phenomenon based on many observations and investigations over time.

Answer 48

Theory

Question 49

Relationship in nature that is supported by many experiments.

Answer 49

Scientific law

Question 50

To gain knowledge, for the sake of knowledge itself.

Answer 50

pure research

Question 51

To solve a specific problem.

Answer 51

applied research

Question 52

Is the ability to do work or produce heat.

Answer 52

energy

Question 53

States that in any chemical reaction or physical process, energy can be converted from one form to another.

Answer 53

Law of conversation of energy

Question 54

The energy that is stored in a substance because of its composition.

Answer 54

Chemical potential energy

Question 55

The symbol "q" represents heat. Is energy that is in the process of flowing from a warmer object to a cooler object.

Answer 55

Heat

Question 56

The amount of energy required to raise the temperature of one gram of pure water by one degree celsius(c) 1 J= 0.239 cal

Answer 56

Caloric

Question 57

Energy stored, energy position

Answer 57

potential energy

Question 58

Energy of movement

Answer 58

Kinetic energy

Question 59

Energy forms:

Answer 59

Chemical, nuclear, radiant, mechanical, electrical and heat

Question 60

Amount of heat required to raise the temperature of one gram of a substance by 1 c.

Answer 60

Specific heat

Question 61

Alternative energy sources:

Answer 61

``` Solar energy Geothermal energy Biomass energy Wind energy Hydroelectric energy Tidal energy ```

Question 62

It comes from natural resources like wind, rain, plants and also is known as renewable resources, and is the cleanest.

Answer 62

green energy

Question 63

Is the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances.

Answer 63

green chemistry

Question 64

Ratio of equivalent values having different units.

Answer 64

Conversion factor

Question 65

Rules for significant figures.

Answer 65

- Nonzero numbers. - All final zeros to the right of the decimal - Any zero between significant figures - Placeholder zeros are not significant

Question 66

Non-significant zeros are to the...

Answer 66

left,