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Chemistry > Matter & Materials > Flashcards

Matter & Materials Flashcards

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1
Q

Mixtures

A
  • Can be separated by mechanical means

* Consists of two or more substances

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2
Q

Hermogenous Mixture

A
  • Composition is constant
  • Uniform Composition
  • Known as solutions
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3
Q

Heterogenous Mixtures

A
  • Non-uniform compositions

* Do not dissolve in each other

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4
Q

Pure substances

A

Consist of ONE type of element

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5
Q

Matter

A

Anything that occupies a space and mass

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6
Q

Substance

A

Form of matter

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7
Q

Suspension

A

A heterogenous mixture of solid mixed with a liquid

Separated by filtration

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8
Q

Miscible

A

Two liquids mixed completely

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9
Q

Immiscible

A

Liquids that do not mix

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10
Q

Emulsion

A

When two immiscible liquids are shaken

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11
Q

Separating mixtures

A

Separating by physical means:

Magnetism
Filtration

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12
Q

Compounds

A

A pure substance made of two or more elements bonded through chemical means

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13
Q

Separating compounds

A

Chemical processes is the only way

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14
Q

Types of compounds

A

Covalent

Ionic

Metallic

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15
Q

Covalent

A

Non-metal & non-metal

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16
Q

Ionic

A

Metal & non-metal

17
Q

Cation

A

Atom that loses an electron

Positive

18
Q

Anion

A

Atom that gains an electron

Negative

19
Q

States of matter

A

Solid
Liquid
Gas

20
Q

Solids

A

Definite shape and volume
Have mass
Take up space

21
Q

Particles in solids

A

Tightly packed
Very little energy
Vibrate in place

22
Q

Liquids

A

Take the shape of the container

Have mass

23
Q

Particles in liquids

A

Loosely packed
Medium amount of energy
Flow around each other

24
Q

Gases

A

Take up space
No definite volume
Have mass

25
Q

Particles in gases

A

Move freely

Have lots of energy

26
Q

Sublimation

A

Solid to gas

27
Q

Phase transition

A

The physical change in the phase

Eg) water to ice

28
Q

Melting point

A

The point at which the solid melts into a liquid

29
Q

Boiling point

A

The point at which the liquid boils into a solid

30
Q

Kinetic Molecular Theory

A

Explains the changes of state in terms of the positions of particles

31
Q

Properties of metals

A

High BP, High MP
Solid
Some are magnetic

32
Q

Properties of non-metals

A

Poor conductors of heat

Low BP

33
Q

Atoms

A

Consist of protons, neutrons and electrons

34
Q

What is an atom

A

The smallest particle of an element

Chemistry (6 decks)

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