Year 9

Question 1

Define Ionic bonding

Answer 1

Electrostatic force of attraction between oppositely charged ions. Ions are charged atoms formed by the transfer of electrons

Question 2

Define an Isotope

Answer 2

Same atomic number (same number of protons) but different mass number (different number of neutrons)

Question 3

What is a Compound

Answer 3

Two or more different atoms chemically bonded together (carbon dioxide)

Question 4

What is a Mixture

Answer 4

Atom or molecules mixed that are different and not chemically bonded(air)

Question 5

What is an Element

Answer 5

All same atoms (e.g. oxygen)

Question 6

What is a Molecule

Answer 6

Two or more non metals covalently bonded together

Question 7

What are Metals

Answer 7

Malleable , ductile and have high melting and boiling points. Metals conduct electricity. Metal oxides are basic

Question 8

What are Non metals

Answer 8

Don’t conduct electrify. Non metal oxides are acidic

Question 9

Test for hydrogen

Answer 9

Lighted splint ignites gas with a squeaky pop

Question 10

Test for oxygen

Answer 10

Relight a glowing splint

Question 11

Test for carbon dioxide

Answer 11

Limewater goes cloudy

Question 12

What is Carbon monoxide

Answer 12

• Formed in incomplete combustion in fuel in car engines.

* Poisonous to humans and animals - prevents red blood cells from carrying oxygen

Question 13

What is Sulfur dioxide

Answer 13

• Reacts with oxygen
• Sulfur impurities in fuel burn
• Creates acid which harms plants and fish
• React limestone and marble

Question 14

Define Immiscible

Answer 14

2 liquids can’t mix together (oil and water)

Question 15

Define Miscible

Answer 15

2 liquids can mix together (ethanol and water)

Question 16

Define Metallic bond

Answer 16

Electrostatic attraction between the positive metal ions and delocalised electrons

Question 17

What are Metal ions

Answer 17

Layers of metal ions able to slide over each other without breaking the metal bonds

Question 18

What is the Reactivity series
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Send 
Lions 
Cats
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And
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Zebras 
In 
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Lovely 
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General 
Penguin)

Answer 18

Potassium 
Sodium
Lithium 
Calcium 
Magnesium 
Aluminium 
Carbon
Zinc
Iron
Tin
Lead 
Hydrogen
Copper
Silver
Gold
Platinum

Question 19

Metal + acid =

Answer 19

Salt + hydrogen

Question 20

What is Rusting

Answer 20

• Iron rusts , it corrodes easily . •Only happen when in contact with water and oxygen .
• Called hydrated iron(III) oxide
• flakey and soft

Question 21

How rusting is prevented

Answer 21

• paint or plastic coat acting as a barrier
• oiling for moving parts
• scarified metal(zinc), means water and oxygen will react with that first

Question 22

What are Alloys

Answer 22

•mixture of 2 or more elements, at least one element is a mixture
•random arrangement
•contains atoms different sizes
•so difficult for layers so slide over each other
Alloys harder than pure metals

Question 23

Acid + alkali =

Answer 23

Salt + water

Question 24

Acid + base =

Answer 24

Salt + water

Question 25

What is an Atom

Answer 25

Smallest particle = element not bonded

Question 26

Define Ion:

Answer 26

Atom which has lost or gained electron which has a charge

Question 27

Define Lattice:

Answer 27

Lots of ions bonded together (solid)

Question 28

Define Network:

Answer 28

• Giant covalent structure

* E.g. Diamond or Graphite