Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry 107 > Chapter 1: Matter And Energy > Flashcards

Chapter 1: Matter And Energy Flashcards

0
Q

Mass

A

A measure of how much matter an object contains

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Matter

A

Anything that occupies space and has mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Energy

A

The capacity to transfer heat or the capacity to do work

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Chemistry

A

The study of composition, structure, & properties of matter and of the energy consumed or given off when matter undergoes change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Pure Substance (or substance)

A

Same physical and chemical properties throughout. Have distinctive properties. Cannot be separated physically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Physical Process

A

Transformation of a sample of matter that does not alter its chemical identity
Ex) change in physical state
Ex) filtration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Mixture

A

Contains one or more pure substances that cannot be separated chemically but can be separated physically.
They are not in definite proportion
(Heterogeneous mixtures and solutions are both mixtures)
Ex)salad dressing, salt water, vinegar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Homogeneous Mixture

A

No visible regions or boundaries. It is the same physically and chemically throughout.
Ex) koolaid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Solution

A

Same as homogeneous mixture. They are usually liquids but may also be solids or gases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Heterogeneous Mixture

A

Can see the components of the mixture clearly
Ex) oil and water
Ex) iron schillings in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Element

A

Pure substance that cannot be reduced chemically.
Ex) oxygen, O2
Ex) gold, Au

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Compound

A

A pure substance consisting of two or more elements in a definite proportion. It can only be separated chemically.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Law of Constant Composition

A

All samples of a particular compound contain the same elements combined in the same proportions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Atom

A

The smallest particle of an element that retains the chemical identity of that element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Molecule

A

Multiple atoms bonded together chemically in characteristic proportions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Chemical Formula

A

Representation of elements and compounds using symbol of elements and subscripts to indicate number of atoms in each element in one molecule
Ex) H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Chemical Equation

A

Representation of a chemical reaction using chemical formulas. Reactants and products.

17
Q

Chemical Reaction

A

The transformation of one or more substances into different substances. Represented by chemical formulas.

18
Q

Chemical Bond

A

Energy that holds two atoms in a molecule together.

19
Q

Filtration

A

the physical process of separating a mixture using a filter

20
Q

Distilation

A

The physical process of separating a mixture by heating up the mixture causing the more volatile (lower boiling point) substance to condense while the other is retained.

21
Q

Intensive Property

A

Properties that do not depend on the amount of substance. Ex) color, melting point

22
Q

Extensive Property

A

Depends on the amount of substance

Ex) volume, mass

23
Q

Physical Property

A

Can be observed without changing the chemical identity of a substance or without changing it into another substance.
Ex) color, luster, hardness

24
Q

Chemical Property

A

Can only be observed through a chemical reaction, changing the substance into another substance
Ex) flammability

25
Q

Density (d)

A

Density (d) = Mass (m) / Volume (v)
(Remember dmv)
The ratio of the mass of an object to its volume

26
Q

Solid

A

Definite shape and volume

27
Q

Liquid

A

No definite shape but definite volume. Will flow to assume shape of container

28
Q

Gas (vapor)

A

No definite shape nor volume

Expands to fill container

29
Q

Sublimation

A

Transformation of solid directly into gas

30
Q

Deposition

A

Transformation of gas directly into a solid

31
Q

Scientific Method

A

A way of obtaining knowledge based on observing a phenomena, coming up with a testable hypothesis, and additional experiments to validate hypothesis

32
Q

Hypothesis

A

A testable tentative explanation for an observation or series of observations

33
Q

Scientific Theory

A

A general explanation of a widely observed phenomenon that has been extensively tested and validated

34
Q

Meter

A

Standard unit of length

35
Q

Significant Figures

A

The greater the number of sig figs the greater the certainty of the value. The measure of certainty in the value

36
Q

Precision

A

How repeatable a measurement is

The greater number of sig figs the more precise

37
Q

Accuracy

A

The agreement between an experimental value and the true value.

38
Q

Conversion Factor (converting units)

A 
Initial units X desired units/ initial units
Ex)
23cm to meters
23cm X .001m/ 1cm
.0023m
39
Q

Kelvin (K)

A

The SI unit of temp

K= C + 273.15

40
Q

Absolute Zero (K)

A

Theoretically lowest temp possible bc it is lowest on kelvin scale

41
Q

Celsius

A

Measure of temp

C=5/9(F-32)

Chemistry 107 (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions