Use the molecules to balance this equation for the reaction between nitrogen and hydrogen. What number should go in the grey box to balance the equation?
Use the molecules to balance this equation. What number should go in the grey box to balance the equation?
Use the molecules to balance this equation for the reaction between methane (CH4) and oxygen to form carbon dioxide and water. What number should go in the grey box to balance the equation?
When different elements react, their atoms join with other atoms. What type of substance is formed?
What gas must be present for burning to happen? Give the full name, not the symbols.
What is the missing word in this word equation?
acid + alkali →
A solution was found to have a pH of 3. Is this solution acidic or alkaline?
A solution was tested with a pH sensor and the reading was found to be 9. Is it a solution of an acid or an alkali?
What colour does litmus paper change to when it is dipped in an acid?
What colour does red litmus paper change to when it is dipped in an alkali?
Complete the following sentence. An acidic solution has a pH number less than
Complete the following sentence. An alkaline solution has a pH number greater than
Is a substance with a pH below 7 an acid or an alkali?
Is a substance with a pH above 7 an acid or an alkali?
Complete the word equation: metal + acid → salt +
Which two words complete this equation for the neutralisation reaction?
sodium hydroxide +
Complete this thermal decomposition
Complete this thermal decomposition
Complete this word equation.
Complete this word equation.
Complete this word equation.
Complete this word equation.
This equation shows the reaction between sodium and chlorine to produce sodium chloride. What number should go in the box to balance the equation?
This equation shows the reaction between zinc and hydrochloric acid to form zinc chloride and hydrogen. What number should go in the box to balance the equation?
This equation shows the reaction between carbon and oxygen to form carbon monoxide. What number should go in the box to balance the equation?
This equation shows the reaction between aluminium and oxygen to form aluminium oxide. What number should go in the box to balance the equation?
What is the scientific term used for the chemical reaction when a fuel burns? (Hint: your answer should be one word.)
When copper carbonate is heated, it forms copper oxide and carbon dioxide. What is the name of this type of reaction?
The diagram below shows magnesium reacting with hydrochloric acid. You can tell a reaction is happening because the magnesium is __________. What completes the sentence?
Look at the picture below. What kind of reaction is being used to extract copper from its salt solution using the iron nail?
Look at the picture. What gas is the burning candle producing during combustion? Give the word, not the symbols.
Look at the picture. What will happen to the oxygen levels in the sealed glass jar?
What is the name of the process when an acid and an alkali react?
Ammonia dissolves in water to give a solution. Will this solution be acidic or alkaline?
What pH indicates a neutral solution?
The pH scale is a measure of how
Is hydrochloric acid a weak or strong acid?
Is citric acid a weak or strong acid?
Is ethanoic acid a weak or strong acid?
Is sodium hydroxide a weak or strong alkali?
Is ammonia solution a weak or strong alkali?
Which is more acidic?
Look at the diagram. Each of the tubes has a solution mixed with universal indicator. Which tube do you think would have a pH of around 2?
Look at the diagram. Each of the tubes has a solution mixed with universal indicator. Which tube do you think would have a pH of around 7?
Look at the diagram. Each of the tubes has a solution mixed with universal indicator. Which tube do you think would have a pH of around 10?
What name is given to substances (both soluble and insoluble) such as metal hydroxides and metal oxides that can neutralise acids?
What state symbol would you use to show that a reacting substance was a gas?
