Higher chemistry paper 1 revision

What is the electronic configuration for this atom?

• 2.7.2

• 2.8.1

• 2.8.2

• 2.8.3

What are the advantages of phytoextraction? (more than one answer)

• No harmful gases are produced

• causes less damage to the landscape than mining

• very slow

• can extract metals from contaminated soils

During electrolysis of molten sodium chloride what products would you expect at the anode and cathode?

• Sodium metal and chlorine gas

• Hydrogen gas and chlorine gas

• Sodium metal and hydrogen gas

• Hydrogen gas and oxygen gas

What is the main advantage of using electrolysis to extract metals?

• It requires a lot of energy

• The metal will be more pure than other methods

• The cost of extracting metals with this metal is low

• It doesn't require a lot of energy

Why does an ionic solid NOT conduct electricity

• Because the atoms cant move

• Because the ions cant move

• Because the electrons cant move

• Because electricity cannot travel through any solids

What does the symbol mean?

• It is a redox reaction

• It is a reversible reaction

• It is a displacement reaction

• It is a reaction where nothing will happen

What does the group number on the periodic table tell you?

• The number of electrons

• The number of protons in the nucleus

• The number of electron shells

• The number of electrons in the outer shell

What does the period number on the periodic table tell you?

• The number of electrons in the outer shell

• The number of electrons

• The number of electron shells

• The number of neutrons in the nucleus

What is an isotope? (choose two)

• The same element that has a different mass number

• The same element that has a different atomic number

• The same element with a different number of electrons

• The same element with a different number of neutrons

What could you use to measure the pH of a solution?

• pH meter

• Universal indicator

• Acidometer

• Water