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A-level Chemistry Year 1
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Acids react with bases, such as group 2 metal oxides, to give a salt and water.
The equation shows hydrochloric acid reacting with calcium oxide.
2HCl + CaO → CaCl2 + H2O
True or false, the chemical equation shown above is balanced?
Which statement best explains the meaning of the term ‘
The number of neutrons in the nucleus of the atom shown above is
Choose the correct definition
Osmium exists as two isotopes, Os, and has a relative atomic mass (A Os isotope?
Give your answer to the nearest whole number.
The number of protons in the atom shown above is
Select the correct relative mass for each of the three sub-atomic particles