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WorksheetsQA5 G7
Total questions: 17
Worksheet time: 13mins
Which particles are found in the nucleus of an atom?
Protons and electrons
Protons and neutrons
Electrons and neutrons
Protons, neutrons, and electrons
What are the reactants and products in a chemical reaction?
Reactants are the substances that undergo a change, and products are the substances formed after the change.
Reactants are the substances formed after a change, and products are the substances that undergo a change.
Reactants and products are the same substances.
Reactants and products are different substances, but they have the same properties.
Subtract the atomic number from the mass number
Which Element has the least mass?
Lithium
Hydrogen
Beryllium
Oxygen
6CO2+6H2O+Sunlight -> C6H12O6+6O2
How many Carbon Atoms are in the reactant side of the above equation?
12
2
6
24
What type of chemical reaction is this equation an example of?
Synthesis Reaction
Decomposition Reaction
Combustion Reaction
Precipitation Reaction
What type of chemical reaction is this equation an example of?
Displacement reaction
Synthesis reaction
Neutralisation reaction
Precipitation reaction
Which is the correct electron configuration for carbon?
How many sulfur atoms are present in Al2(SO4)3
1
2
3
4
What type of reaction is the following: Fe + CuSO4 -> FeSO4 + Cu?
Combustion reaction
Decomposition reaction
Double replacement reaction
Single replacement reaction
An element has 20 neutrons and 15 protons. Find the mass number of the atom.
25
20
30
35
Iron combines with oxygen to form __________
ferrous oxide
chlorine
Water
Iron oxygen
How many electrons does this magnesium ion have?
24
12
10
14
Which elements are in copper sulphate?
copper
sulphur
oxygen
sulphate
Name the ionic compound, CaCO3
calcium carbide
calcium carbon trioxide
calcium carbon oxide
calcium carbonate
Formula for lead (II) chloride
PbCl2
Pb2Cl
Pb2Cl3
Pb3Cl2
