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Additional Science-Chemistry

Description

Quiz on Additional Science-Chemistry, created by Rebecca Ryder on 23/10/2014.
Rebecca Ryder
Quiz by Rebecca Ryder, updated more than 1 year ago
Rebecca Ryder
Created by Rebecca Ryder about 10 years ago
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Resource summary

Question 1

Question
What is the charge and mass of an electron
Answer
  • charge=+1 mass=1
  • charge=-1 mass=1
  • charge=-1 mass=1/2000

Question 2

Question
Which ones are the correct state symbols?
Answer
  • Solid - s
  • Liquid - lq
  • Gas - g
  • Aqueous - a

Question 3

Question
What do ionic bonds form?
Answer
  • Ion
  • Element
  • Compound

Question 4

Question
What happens to electrons in ionic bonding?
Answer
  • a metal loses electron(s) and a non-metal gains electron(s).
  • a metal gains electron(s) and a non-metal loses electron(s).

Question 5

Question
In ionic bonding, which charged particles attract?
Answer
  • positive with positive
  • negative with negative
  • positive with negative

Question 6

Question
What are the correct properties of giant ionic compounds?
Answer
  • it conducts as a liquid and as a solid as the electrons are free to move
  • they are very brittle and break when hit
  • they have extremely low melting points due to lots of bonds
  • they are soluble in water

Question 7

Question
NH3 is ammonia
Answer
  • True
  • False

Question 8

Question
compounds such as carbon dioxide (CO2), chlorine (Cl2) and water (H2O) are called simpelr molecular compounds.
Answer
  • True
  • False

Question 9

Question
what are the correct properties of a simple covalent compounds
Answer
  • low melting point
  • strong covalent bonds between atoms
  • strong intermolecular forces
  • doesn't take a lot of energy to break the bonds
  • not usually a gas
  • no electrical conductivity
  • doesn't conduct as a solid or liquid but does conduct as a gas
  • there are no charged particles

Question 10

Question
Diamond is made up of carbon atoms. Each carbon atom has four strong bonds and is very hard.
Answer
  • True
  • False

Question 11

Question
diamond is a simple covalent structure
Answer
  • True
  • False

Question 12

Question
Does diamond have a low or high melting point?
Answer
  • Low melting point
  • High melting point

Question 13

Question
diamond can conduct electricity
Answer
  • True
  • False

Question 14

Question
Tick the correct statements in reference to Graphite
Answer
  • made up of carbon atoms
  • has 5 strong bonds
  • atoms form layers
  • contains delocalised electrons
  • the delocalised electrons are not free to move
  • cannot conduct electricity
  • layers can slide over each other
  • graphite is soft
  • low melting point

Question 15

Question
metals are soft and malleable
Answer
  • True
  • False

Question 16

Question
metals are weak
Answer
  • True
  • False

Question 17

Question
they are good conductors of electricity
Answer
  • True
  • False

Question 18

Question
they are poor conductors of heat
Answer
  • True
  • False

Question 19

Question
what is an alloy?
Answer
  • a pure metal
  • a mixture of metals
  • a mixture of metals and non-metals

Question 20

Question
a metallic bond is the bonding of the free electrons in metals.
Answer
  • True
  • False

Question 21

Question
the attraction is between neutral metal ions and delocalised electrons
Answer
  • True
  • False
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