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Science 9 > Physical And Chemical Properties Of Matter > Flashcards

Physical And Chemical Properties Of Matter Flashcards

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0
Q

What is an element?

A

A substance made up of all the same type of atom

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1
Q

What is an atom?

A

The smallest particle of an element

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2
Q

What is a compound?

A

Two or more elements that are chemically combined (things change form)

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3
Q

What is a heterogeneous mixture?

A

A mixture that is not uniform in composition and the substances remain separated

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4
Q

What is a homogenous mixture?

A

A mixture uniform in composition where substances are evenly mixed together and cannot be separated

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5
Q

What is a pure substance?

A

Matter that always has exactly the same composition

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6
Q

What is a solute?

A

The thing that is being dissolved

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7
Q

What is a solvent?

A

The thing that is dissolving something else

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8
Q

What makes a substance able to conduct electricity?

A

It must have dissolved ions

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9
Q

In order for something to boil, the ___ pressure of the substance must equal the ____ pressure.

A

Vapor

External

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10
Q

What is vapor pressure?

A

Pressure starting from inside the substance and pushing out.

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11
Q

What is external (atmospheric) pressure?

A

Pressure starting on the outside of a substance and pushing in.

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12
Q

What does vapor pressure do as the temperature of a substance increases?

A

Increases

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13
Q

When can physical properties be observed?

A

Anytime, it can be observed without changing the material

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14
Q

When can chemical properties be observed?

A

Only when substances are changing into different substances

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15
Q

What are the three steps to identify a substance?

A

Decide which properties to test
Do tests on a sample
Compare results to data of unknown material

16
Q

What is viscosity?

A

The resistance of a liquid to flow

17
Q

What is conductivity?

A

A materials ability to pass an electric current

18
Q

What is flammability?

A

A materials ability to burn when in the presence of oxygen

19
Q

What is malleability?

A

The ability of a solid material to be hammered without breaking

20
Q

What is hardness?

A

The quality of being hard

21
Q

What is melting point?

A

The temperature that a material changes from solid to liquid

22
Q

What is density?

A

The ratio of mass/volume. Used to test the purity of a substance

23
Q

What is boiling point?

A

The temperature a substance will boil at

24
Q

What is an acid?

A

A substance with a pH less than 7

25
Q

What is a base?

A

A substance with a pH over 7

26
Q

What is reactivity?

A

How easily a substance will combine with another substance

27
Q

What is color?

A

Different sensations on the eye resulting from how the object reflects light

28
Q

What is volume?

A

The amount of space a substance or object occupies

29
Q

What is luster?

A

The manner in which the surface of a mineral reflects light

30
Q

What is texture?

A

The feel, appearance, or consistency of a surface or substance.

31
Q

What is an odor?

A

A distinctive smell

32
Q

What is transparency?

A

An object that allows light to pass through so that objects behind it can be distinctly seen

33
Q

What is solubility?

A

The amount of a substance that can dissolve in a particular solvent

34
Q

What is mass?

A

The quantity of matter something contains

35
Q

What is volatility?

A

The ability to evaporate quickly

Science 9 (8 decks)

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