Unit 1: Matter and The Mole Flashcards

0
Q

Chemical Properties

A

Those that can be observed only when there is a change in the COMPOSITION of the substance

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1
Q

Physical Properties

A

What can be observed without changing its original state.

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2
Q

Physical Change

A

A change in matter that DOES NOT involve a change in the chemical identity of individual substances

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3
Q

Boiling Point

A

Physical

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4
Q

Freezing Point

A

Physical

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5
Q

Melting Point

A

Physical

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6
Q

Evaporating

A

Physical

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7
Q

Dissolving/Solubility

A

Physical

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8
Q

Crystallizing

A

Physical

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9
Q

Mole/Avogardo’s number

A

Number of Carbon atoms in exactly 12 grams of Carbon 12

6.022XE23

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10
Q

Representative Particles

A

Smallest piece of a substance

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11
Q

Chemistry

A

The science that investigated and explains the structure and properties of matter.
Composition, properties, and the changes

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12
Q

Scientific Method

A

Systematic approach to answer a question or study a situation

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13
Q

Hypothesis

A

A possible explanation for what has been observed.

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14
Q

Experiment

A

A set of controlled observations that test a hypothesis

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15
Q

Independent Variable

A

The variable that is changed by the experimenter

16
Q

Dependent Variable

A

The changes that occur from the independent variable

17
Q

Theory

A

A thoroughly tested hypothesis that can NEVER be proven and examine why things behave a certain way.

18
Q

Scientific Law

A

Describes a relationship in nature that is supported by many experiments an for which no exception has been found.

19
Q

Matter

A

Anything that takes up space and has mass.

20
Q

Mass

A

Is the measure of the amount of matters that an object contains.

21
Q

Mixture

A

Something that has a variable composition.

22
Q

Heterogenous Mixture

A

A type of mixture that is not uniform/similar

23
Q

Homogenous Mixture (Solution)

A

A type of moisture where matter is uniform/similar throughout

24
Q

Pure substances

A

Either elements or compounds

25
Q

Elements

A

Substances that CANNOT be broken down into other substances chemically or physically

26
Q

Compound

A

Substances made of two or more elements combined chemically.

27
Q

Density

A

The amount of matter contained in a unit of volume

28
Q

Intrinsic Property

A

Independent of the amount of matter in a sample (Density)

29
Q

Extrinsic Property

A

Change depending on the amount of matter in a sample. (Mass and Volume)