Elements And Compounds Flashcards
(46 cards)
1
Q
Define the term atom
A
The smallest part of a substance
2
Q
Define the term element
A
A pure substance made up of only one type of atom
3
Q
What is H
A
Hydrogen
4
Q
What is He
A
Helium
5
Q
What is Li
A
Lithium
6
Q
What is Be
A
Beryllium
7
Q
What is B
A
Boron
8
Q
What is C
A
Carbon
9
Q
What in N
A
Nitrogen
10
Q
What is O
A
Oxygen
11
Q
What is F
A
Fluorine
12
Q
What is Ne
A
Neon
13
Q
What is Na
A
Sodium
14
Q
What is Mg
A
Magnesium
15
Q
What is Al
A
Aluminium
16
Q
What is Si
A
Silicon
17
Q
What is P
A
Phosphorus
18
Q
What is S
A
Sulfur
19
Q
What is Cl
A
Chlorine
20
Q
What is Ar
A
Argon
21
Q
What is K
A
Potassium
22
Q
What is Ca
A
Calcium
23
Q
What is Fe
A
Iron
24
Q
What is Cu
A
Copper
25
What is Ag
Silver
26
What is Au
Gold
27
How does the properties of copper determine its use
Copper is ductile and has high electrical conductivity which is why it’s used in electrical wiring
28
How do the properties of Aluminium determine its use
Aluminium is malleable and has high thermal conductivity which is why it’s used in saucepans
29
How do the properties of helium determine its use
Helium is a gas and has low reactivity, which is why it’s used in airships
30
How do the properties of carbon (diamond) determine its use
Carbon (diamond) is a solid and has a high melting point, which is why it’s used in drill and blade tips
31
What did Rutherford do
He described atoms as having a nucleus made of positive and negative protons with electrons orbiting around it
32
What did Chadwick do
He showed/proved that neutrons existed
33
What is Ammonia’s formula and the elements it’s made up of
formula- NH3
Elements- 1 nitrogen, 3 hydrogen
34
What is Carbon Dioxides formula and the elements it’s made up of
Formula- CO2
Elements- 1 carbon, 2 oxygen
35
What is Glucoses formula and which elements is it made up of
Formula- C6 H12 O6
Elements- 6 carbon, 12 hydrogen, 6 oxygen
36
What is hydrochloride acids formula and the elements it’s made up of
formula- HCI
Elemets- 1 hydrogen, 1 chlorine
37
What is sodium chlorides formula and the elements it’s made up of
Formula- NaCl
Elements- 1 sodium, 1 chlorine
38
What is sulphuric acids formula and the elements it’s made up of
Formula- H2SO4
Elements- 2 hydrogen, 1 Sulfur, 4 oxygen
39
What is waters formula and what elements is it made up of
Formula- H2O
Elements- 2 hydrogen, 1 oxygen
40
Explain how the periodic table helps scientist to communicate
Because they don’t have to say the whole word, they can just identify them from their formula, the formula also helps to indicate what elements it’s made up of
41
Discuss how some elements have symbols that do not resemble their name
This is because their symbol comes from their Latin or Greek names, the are the oldest elements
42
Outline the features of elements
Can be broken down into two broad categories
Metals
Non-metals
Cannot be separated into small components by physical or chemical processing
43
Outline the features of compounds
A pure substance
| made up of two or more different elements
44
Outline the features of mixtures
Not pure substances
May contain elements and/or compounds
Can be separated into smaller components by chemical processing
45
Define the term alloy
A type of metal that can be made by combining two or more different metallic elements
46
Identify the difference between bronze and iron
Bronze is denser
Iron rusts, bronze doesn’t
Bronze is an alloy of tin and copper while iron is a naturally occurring metal
