Atoms, Elements & Compounds Flashcards
(50 cards)
1
Q
What are atoms?
A
All substances are made up of these. These are the ‘building blocks of chemistry’.
2
Q
How many types of atoms are there?
A
About 100
3
Q
What are elements?
A
These are the simplest substances, they are made up of only one atom.
4
Q
What is a compound?
A
These are atoms of different elements chemically bonded together. They always keep the same ration, eg. H2O.
5
Q
What is H?
A
Hydrogen
6
Q
What is He?
A
Helium
7
Q
What is Li?
A
Lithium
8
Q
What is Be?
A
Beryllium
9
Q
What is B?
A
Boron
10
Q
What is C?
A
Carbon
11
Q
What is N?
A
Nitrogen
12
Q
What is O?
A
Oxygen
13
Q
What is F?
A
Fluorine
14
Q
What is Ne?
A
Neon
15
Q
What is Na?
A
Sodium
16
Q
What is Mg?
A
Magnesium
17
Q
What is Al?
A
Aluminium
18
Q
What is Si?
A
Silicon
19
Q
What is P?
A
Phosphorus
20
Q
What is S?
A
Sulphur
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
What is Fe?
Iron
26
What is Cu?
Copper
27
What is Zn?
Zinc
28
What is Ag?
Silver
29
What is Sn?
Tin
30
What is Au?
Gold
31
What is Hg?
Mercury
32
What is Pb?
Lead
33
What are the two forms of Carbon?
Graphite and Diamond
34
What are the horizontal rows called in the Periodic table?
Periods
35
What are the vertical columns called in the Periodic table?
Groups
36
What is a molecule?
Two or more atoms bonded together
37
What state are metals at in room temperature?
Solid
38
What state are non-metals in at room temperature?
Liquid/Gas
39
What kind of melting points do metals have?
High
40
What kind of melting points do non-metals have?
Low
41
What kind of density do metals have?
High
42
What kind of density do non-metals have?
Low
43
Are metals malleable/ductile?
Malleable
44
Are non-metals malleable/ductile?
Ductile
45
What dies mixture and heat make?
Mixture + Heat --> Compound
46
What is a mixture?
A mixture is not chemically bound together and can be separated easily. It does to have a fixed ratio.
47
What is a precipitation reaction?
A reaction in which a solid is created through a chemical reaction.
48
Is mass affected in a chemical reaction?
No, the mass is not affected, the atoms are only rearranged.
49
What do reactants make?
Reactants--> Products
50
What is diffusion?
The movement of particles
