C1- 21st Century Science revision

Suitable for Foundation students, good revision of keywords.
What N makes up 78% of air?. What A makes up 1% of air?. What P describe small particles of carbon that make buildings dirty?. What S causes acid rain?. What O is a measurement that stands out from the rest?. What R is the difference between the smallest and largest value?. What P are formed when reactants react together?. What C is formed in incomplete combustion?. What H is the main type of compound in most fuels?. What G describes the type of gas carbon dioxide is?. What A is a condition that can get worse with high concentrations of nitrogen dioxide in the air?. What C is fitted into cars to reduce pollution?. What E are the building blocks of all materials?. What P are the units used to measure concentration of pollutants in air?. What R can help reduce the amount of energy used and is a good way of re-using things?. What C is a matching pattern?. What S is a renewable form of energy?. What E is a result of acid rain on stonework?. What O is needed for fuels to burn?. What P is a process that removes carbon dioxide from the air?.

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