Salts and Neutralisation reactions

Question 1

Acids that make salts:

Answer 1

• HCl (Sodium chloride)
• HNO3 (Sodium nitrate)
• H2SO4 (Sodium sulphate)

Question 2

Products of: Acid + Metal –>

Answer 2

–> Metal salt + Hydrogen

Question 3

Products of: Acid + Metal Oxide –>

Answer 3

–> Metal salt + Water

Question 4

Products of: Acid + Metal Hydroxide –>

Answer 4

–> Metal salt + Water

Question 5

Products of: Acid + Metal Carbonate –>

Answer 5

–> Metal salt + Water + Carbon Dioxide

Question 6

What is a base?

Answer 6

Any substanhce which could reacts with an acid to form a salt and water

Question 7

Calcium nitrate contains ions Ca 2+ and NO3 -, give the formula for calcium nitrate

Answer 7

Ca(NO3)2

Question 8

Method to make pure, dry crystals of magnesium sulfate from a metal oxide and a dilute acid

Answer 8

• Heat sulfuric acid over bunsen burner until it bubbles
• Add in magnesium oxide until its in excess
• When mixture cools, pour into a beaker, filtering out the excess magneisum oxide out with filter paper
• Pour mixture into evaporating dish and heat over a bunsen burner
• Turn off heat and let mixture cool and crystals form
• Pat crystals dry with towel
  -Collect crystals

Question 9

What are acids?

Answer 9

Acids are substances that release H+ ions when they dissolve in water
HCl –> H+ + Cl-

Question 10

What are bases?

Answer 10

Bases are substances that react with acids. Some bases are soluable - these are called alkalis. Alkalis release hydroxide ions (OH-) in solutions.