Atoms, Elements & Compounds Flashcards

1
Q

What are atoms?

A

All substances are made up of these. These are the ‘building blocks of chemistry’.

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2
Q

How many types of atoms are there?

A

About 100

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3
Q

What are elements?

A

These are the simplest substances, they are made up of only one atom.

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4
Q

What is a compound?

A

These are atoms of different elements chemically bonded together. They always keep the same ration, eg. H2O.

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5
Q

What is H?

A

Hydrogen

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6
Q

What is He?

A

Helium

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7
Q

What is Li?

A

Lithium

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8
Q

What is Be?

A

Beryllium

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9
Q

What is B?

A

Boron

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10
Q

What is C?

A

Carbon

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11
Q

What is N?

A

Nitrogen

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12
Q

What is O?

A

Oxygen

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13
Q

What is F?

A

Fluorine

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14
Q

What is Ne?

A

Neon

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15
Q

What is Na?

A

Sodium

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16
Q

What is Mg?

A

Magnesium

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17
Q

What is Al?

A

Aluminium

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18
Q

What is Si?

A

Silicon

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19
Q

What is P?

A

Phosphorus

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20
Q

What is S?

A

Sulphur

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21
Q

What is Cl?

A

Chlorine

22
Q

What is Ar?

A

Argon

23
Q

What is K?

A

Potassium

24
Q

What is Ca?

A

Calcium

25
Q

What is Fe?

A

Iron

26
Q

What is Cu?

A

Copper

27
Q

What is Zn?

A

Zinc

28
Q

What is Ag?

A

Silver

29
Q

What is Sn?

A

Tin

30
Q

What is Au?

A

Gold

31
Q

What is Hg?

A

Mercury

32
Q

What is Pb?

A

Lead

33
Q

What are the two forms of Carbon?

A

Graphite and Diamond

34
Q

What are the horizontal rows called in the Periodic table?

A

Periods

35
Q

What are the vertical columns called in the Periodic table?

A

Groups

36
Q

What is a molecule?

A

Two or more atoms bonded together

37
Q

What state are metals at in room temperature?

A

Solid

38
Q

What state are non-metals in at room temperature?

A

Liquid/Gas

39
Q

What kind of melting points do metals have?

A

High

40
Q

What kind of melting points do non-metals have?

A

Low

41
Q

What kind of density do metals have?

A

High

42
Q

What kind of density do non-metals have?

A

Low

43
Q

Are metals malleable/ductile?

A

Malleable

44
Q

Are non-metals malleable/ductile?

A

Ductile

45
Q

What dies mixture and heat make?

A

Mixture + Heat –> Compound

46
Q

What is a mixture?

A

A mixture is not chemically bound together and can be separated easily. It does to have a fixed ratio.

47
Q

What is a precipitation reaction?

A

A reaction in which a solid is created through a chemical reaction.

48
Q

Is mass affected in a chemical reaction?

A

No, the mass is not affected, the atoms are only rearranged.

49
Q

What do reactants make?

A

Reactants–> Products

50
Q

What is diffusion?

A

The movement of particles