Law of Conservation of Mass Flashcards

1
Q

Quantitative

A

Observations made when counting and measuring.

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

Accuracy

A

How close your measurement is to the actual (true) value.

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

Precision

A

Getting the same results with repeated measurements; having more detail in your measurements.

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

Variable

A

A factor (part) of an experiment that changes

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

Independent Variable (IV)

A

The factor that is being tested it is the cause of the change.

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

Dependent Variable (DV)

A

The factor that is being observed to see the effect.

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

Constant

A

A factor of an experiment that should not change. Most parts of the lab should remain constant.

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

Observation

A

Something you can see, hear, touch, taste or smell and document; cannot be argued; everyone agrees.

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

Inference

A

A conclusion that you make from your observations; can be argued; not everyone agrees.

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

Meniscus

A

The curved surface of a liquid in a glass tube.

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

Margin of Error

A

A measurement of the accuracy of the results of a survey.

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

Dissolve

A

The act of a solid mixing into a liquid.

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

Boiling

A

Steaming or bubbling up under the action of heat.

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

Open System

A

An experiment without a lid or top to it.

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

Estimation

A

An educated guess.

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

Mass

A

A collection of atoms and molecules forming objects.

17
Q

Chemical Change

A

Results:

1) A gas was produced
2) Energy was created
3) A new substance was created
4) It’s hard to get back to the original substance

18
Q

Melting

A

A solid warming up and becoming a liquid.

19
Q

Freezing

A

A liquid getting so cold it turns into a solid.

20
Q

Closed System

A

A system with a lid and container, so no extra mass can ruin the experiment.

21
Q

Metric System Prefixes

A

Deka, hecto, kilo, deci, centi, and milli.

22
Q

Matter

A

A physical substance that occupies space and possesses mass

23
Q

Physical Change

A

Changes affecting the form of a chemical substance, but not its chemical composition.

24
Q

Condensation

A

Water that collects as droplets on a cold surface when humid air is in contact with it.

25
Q

Conserve

A

Protect something from harm or destruction.

26
Q

Law of Conservation of Mass

A

Mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.