Brainscape's Knowledge GenomeTM

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


See full index

Chemistry > Final > Flashcards

Final Flashcards

0
Q

Precision

A

Reflects how close the values In a set of measurements are to each other

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

Accuracy

A

How close the measured value is to the actual value

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

Conversions

A

K h d m d c m

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

Density formula

A

Mass/ volume= d

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

Percent error formula

A

Accepted value-experimental value/ accepted value x 100

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

Chemistry

A

The scientific study of matter and the changes that it undergoes

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

Scientific method

A 
Ask a question
Do background research
Create a hypothesis
Do an experiment 
Gather the data
Form a conclusion
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Matter

A

Anything that takes up space

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

Atom

A

Basic building block of matter

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

What 2 groups can matter be grouped into

A

Pure substances- type of matter with constant composition and properties throughout.
Mixtures- physical combination of 2 or more substances

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

Types of pure substances

A

Elements and compounds

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

Types of mixtures

A

Homogenous

Heterogenous

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

Homogenous

A

A Solution, mixed thoroughly and evenly

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

Heterogenous

A

Consists of visibly different substances

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

Element

A

A substance made of only one kind of atom

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

Compound

A

Made up of more than 1 type of atom

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

Molecule

A

Smallest particle of a compound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Colloid

A

A type of heterogenous mixture with a particle between a suspension and solution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Tyndall effect

A

A colloid whose particles can’t be separates through filtration but scatter light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Emulsion

A

A colloidal dispersion of a liquid in either a liquid or a solid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Physical changes

A 
Changes that do not alter the identity of a substance 
Some include..
Changes of state
Separation of a mixture
Deformation (cutting, bending)
Making solutions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Chemical changes

A

Changes that occur when one substance is turned into another substance
Harder to reverse
Ex
Burning

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Distillation

A

A purification process where the components of a liquid mixture are vaporized then condensed and isolated

23
Q

Evaporation

A

Removes a liquid from a solution to leave a solid material

24
Chromatography
Involves solvent seperation on a solid medium
25
Filltration
Separates solids of different sizes
26
Law of conservation of mass
States that during a chemical reaction the mass of the products must be equal to mass of reactants.
27
Law of definite proportions
Elements react to form compounds in fixed proportions by mass
28
Law of multiple proportions
Elements combine with each other to form simple whole number ratios
29
Electrons
Negative charge
30
Protons
Positive charge
31
Neutrons
No charge
32
Isotopes
Atoms that have the same atomic number but different mass numbers due to a change in the number of neutrons
33
Average atomic mass
Multiply atomic mass and percent abundance of each thing and then multiply. Then add together
34
Avogadro's number
6.2x 10^23
35
Period
Horizontal row
36
Group
Vertical row
37
Metals
Good conductors, malleable
38
Non metal
Bad conductors, brittle
39
Metalloid
Element with properties between metals and nonmetals.
40
Combination
A+B--> AB
41
Decomposition
AB--> A+B
42
Single replacement
A+Bx--> B+Ax
43
Double replacement
Ax+By--> Ay+Bx
44
Combustion
Hydrocarbon + oxygen Always yields carbon dioxide and water | O2 --> CO2 + H2O
45
Empirical formula
Convert to mols | Divide by the smallest number
46
Retention factor equation (used in chromatography)
Distance travel by spot/distance traveled by solvent front
47
Empirical formula
Convert to mols and then divide by the smallest number to find simplist form If percents just turn it to grams.. 25% = 25g
48
John dalton
Invented the atomic theory
49
Rutherford
Did plum pudding experiment to find structure
50
Molecular formula
Solve molecular formula molar mass and divide by empirical formula molar mass
51
Sig figs
w/ decimal- read left to right, first non zero and everything after w/o decimal- read right to left, first non zero
52
Beta particle
0/-1e or B-
53
Gamma ray
y
54
Positron
0/+1B
55
Alpha particle
4/2 He
56
Heat capacity of water
4.18 g/joule

Chemistry (8 decks)

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