Chapter 7 - Elements, Compounds and Mixtures Flashcards
(71 cards)
0
Q
Helium
A
He
1
Q
Hydrogen
A
H
2
Q
Lithium
A
Li
3
Q
Beryllium
A
Be
4
Q
Boron
A
B
5
Q
Carbon
A
C
6
Q
Nitrogen
A
N
7
Q
Oxygen
A
O
8
Q
Fluorine
A
F
9
Q
Neon
A
Ne
10
Q
Sodium
A
Na
11
Q
Magnesium
A
Mg
12
Q
Aluminium
A
Al
13
Q
Silicon
A
Si
14
Q
Phosphorus
A
P
15
Q
Sulfur
A
S
16
Q
Chlorine
A
Cl
17
Q
Argon
A
Ar
18
Q
Potassium
A
K
19
Q
Calcium
A
Ca
20
Q
Iron
A
Fe
21
Q
Zinc
A
Zn
22
Q
Copper
A
Cu
23
Q
Lead
A
Pb
24
Silver
Ag
25
Gold
Au
26
Mercury
Hg
27
Water
H20
28
Carbon Dioxide
CO2
29
Sulphur Dioxide
SO2
30
Common Salt
NaCl
31
Methane Gas
CH4
32
Ammonia
NH4
33
Hydrochloric Acid
HCl
34
Sulphuric Acid
H2SO4
35
Calcium Carbonate
CaCO3 (limestone)
36
Oxygen Gas
O2
37
Chlorine Gas
Cl2
38
Hydrogen Gas
H2
39
Nitrogen Gas
N2
40
Uranium
U
41
What is an element?
Contain only one type of atom.
42
What is a compound?
Two or more different types of atoms bonded together (can't separate)
43
What is a mixture?
Two or more elements, two or more compounds or a combination of both. (Can separate)
44
What is a molecule?
Two or mor atoms joined together.
45
What is an alchemist?
An olden day chemist you mixed chemicals and tried to change metals into gold.
46
What is a scientist?
People skilled in working in the fields of science. They observe and investigate.
47
How many natural atoms are there?
92
48
What are electrons?
Very light, negatively charged particles inside an atom. Move around nucleus.
49
What are protons?
Tiny, but heavy particle found in the nucleus. Have a positive charge.
50
What is a nucleus?
Central part of an atom. Made up of protons and neutrons.
51
What are neutrons?
Tiny, but heavy found in the nucleus. No charge.
52
Atomic Number?
Number of protons in the nucleus.
53
Mass Number?
Number of Protons + Neutrons.
54
How can elements be separated from compounds?
Burning, mixing or electricity.
55
How can water be split?
Electricity. It splits into Hydrogen and Oxygen.
56
Properties of metals?
Solid at room temp, polished, good conductors of heat and electricity, bent into a variety of shapes (malleable), made into wire (ductile), melt at high temps.
57
Properties of Non Metals?
Not polished, brittle, not malleable, poor conductors, melt at low temps.
58
Metalloids?
Properties of metals and non metals. Along zig, zag line! Silicon.
59
How many groups are there?
18
60
How many periods are there?
7
61
Group 1?
Alkali metals
62
Group 2
Alkaline earth metals
63
Middle?
Transition metals
64
Group 17?
Halogens
65
Group 18
Noble Gases
66
Right?
Non Metals.
67
Left?
Metals.
68
Molecules?
Two or more atoms joined together.
69
What is carbon found in?
Diamonds, graphite, amorphous carbon.
70
What are three fuels?
Coal, Oil, Carbon Dioxide
