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Flashcards in Chemistry Deck (30)
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1

Properties of Metaloids

- Characteristics of both metals and non-metals
- Good semi-conductor

2

Properties of Non-metals

- Not good conductors of heat and electricity
- High electronegativity

3

What is the same number as the atomic number?

The number of protons and electrons

4

Electrons =

Protons

5

Name the greenhouse gases

Carbon dioxide, methane, water vapour and nitrous oxide

6

Greenhouse effect

Greenhouse gases keep heat closer to the earth for longer than it normally would, by bouncing the heat off in every direction before allowing the heat to escape, making earth say warm.

7

Global Warming

Warming of the Earth due to the human increase of emissions of carbon dioxide, methane and nitrous oxide.

8

Anions

negatively charged particles

9

Cations

positively charged particles

10

Covalent

Covalent is between two non-metals eg O2, H2

11

Ionic

Ionic is between metal and non-metal

12

Properties of Metals

Shiny
Malleable
Ductile
Good conductors of heat and electricity

13

Mass Number

Number of protons and neutrons in the nucleus

14

Hydrochloric acid + Sodium =

Sodium chloride and hydrogen gas

15

Hydrochloric acid + Calcium =

Calcium chloride and hydrogen gas

16

Types of Reactions

Synthesis Reactions
Decomposition Reactions
Single Displacement Reactions
Double Displacement Reactions
Combustion
Organic Reactions
Redox

17

Characteristics of Covalent Bonds

Physical properties that include lower melting points and electrical conductivity

18

Characteristics of Ionic Bonds

Soluble in water.
They are compounds formed from metals and non-metals.
In a solid state they do not conduct electricity

19

Alloy

An alloy is a metal combined with other substances, resulting in strength, hardness, durability, ductility, tensile strength and toughness.

20

Examples and Characteristics of Alloys

Mild Steel, Hard Steel, Cast Iron, Stainless steel. Stong and good as tools.

21

2,8,1

Sodium

22

2,8,3

Aluminium

23

Calcium Sulphate

CaSO4

24

Copper Chloride

CuCl2

25

Aluminum sulfate

Al2(SO4)3

26

Aluminum oxide

Al2O3

27

Life Cycle of a Star

Stellar Nebula>Star>Red Giant>Planetary Nebula>White Dwarf OR
Stellar Nebula>Massive Star>Red Super-giant>Supernova> Black Hole or Neutron Star

28

Carbon Sink

A carbon sink is a natural or artificial reservoir that accumulates and stores some carbon-containing chemical compound for an indefinite period

29

Carbon cycle

Carbon dioxide goes into living tissue by photosynthesis and returns to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.

30

Structure of the Sun

The sun had 4 different layers, the Photo-sphere, convective zone, radiate zone and the solar interior