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Science > Chemistry > Flashcards

Chemistry Flashcards

1
Q

What group is the alkali metals in

A

Group 1

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2
Q

What group are the alkaline metals in

A

Group 2

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3
Q

What group are the noble gases in

A

Group 4

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4
Q

What group are the halogens in

A

Group 3

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5
Q

What are physical properties

A

Things that are observed with your eyes

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6
Q

What are chemical properties

A

Indicates how a substance reacts with another substance

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7
Q

What are the 7 properties

A

State, lustre, clarity, viscosity, colour, smell, and touch

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8
Q

Examples of state

A

Solid liquid gas

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9
Q

Examples of lustre

A

Shiny dull

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10
Q

Examples of clarity

A

Transparent translucent and opaque

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11
Q

The difference between qualitative and quantitative

A

Quantitative has to do with numbers

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12
Q

What is physical change

A

A change in size shape and state no new substance

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13
Q

What is chemical change

A

A change in physical and chemical properties a new substance is formed

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14
Q

Clues that chemical change has occurred ( give 3 )

A

Unexpected colour change
Heat or light is given off
A bubble of gas form
A solid forms in a liquid
A new odour is released

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15
Q

Subatomic particles

A

Number of protons is the same a atomic number
Number of electrons is the same as protons
Number of neutrons is the mass minus the number

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16
Q

Where is the proton located

A

The nucleus

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17
Q

Where is the neutron located

A

The nucleus

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18
Q

Where are the electrons located

A

In orbit

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19
Q

What is the mass of a proton

A

1amu

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20
Q

What is the mass of a neutron

A

1amu

21
Q

What is the mass of an electron

A

0

22
Q

What is the charge of a proton

A

Positive

23
Q

What is the charge of a neutron

A

No charge

24
Q

What is the charge of an electron

A

Negative

25
Q

Alkali metals reactivity

A

Very reactive

26
Q

Alkaline earth metals reactivity

A

Very reactive ( most reactive metal )

27
Q

Halogens reactivity

A

Very reactive ( most reactive non metal )

28
Q

Noble gasses reactivity

A

Not reactive

29
Q

Greek 450 BC

A

Believed matter was made from 4 elements earth air water and fire

30
Q

Democritus 400 BC

A

Matter is made of tiny particles that can’t be broken down any further these are called atoms

31
Q

Robert Boyle 1659

A

Element is a substance that cannot be chemically broken into simpler substances

32
Q

Joseph Priestley and Antoine Lavoisier 1700

A

Oxygen is in water

33
Q

Henry Cavendish 1700

A

Isolated oxygen

34
Q

John Dalton 1807

A

All matter is made of tiny particles called atoms
Each elect has its own kind of atom with its own mass
Atoms combine to form compounds
Atoms are not created or destroyed

35
Q

Michael Faraday 1831

A

Matter contains positive and negative charges
Opposite charges attract and like charges repel
Atoms combine to form molecules due to their electric reaction

36
Q

JJ Thompson 1897

A

Positive sphere with embedded electrons

37
Q

H Nagaoka 1904

A

Positive sphere and negative ring

38
Q

Ernest Rutherford 1914

A

Small positive nucleus surrounded by negative electrons

39
Q

Niels Bohr 1921

A

Nuclear model as well as orbiting electrons

40
Q

James Chadwick 1932

A

Discovered the neutron, a particle with no charge

41
Q

Counting atoms

A

Every time there is a capital there is a new element

42
Q

Matter

A

Anything that has mass and takes up space

43
Q

Particle theory of matter (5)

A
  1. All matter is made of tiny particles
  2. All particles of one substance are the same
  3. There is always space between particles
  4. Particles are always moving. The more energy the faster
  5. Particles are always attracted to each other. The closer the more traction
44
Q

Melting

A

Change of state from solid to liquid

45
Q

Freezing

A

Change of state from liquid to solid

46
Q

Evaporation

A

Change of state from liquid to gas

47
Q

Condensation

A

Change of state from gas to liquid

48
Q

Sublimation

A

Change of state from a solid to a gas or a gas to a solif

Science (13 decks)

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