WorksheetsSNC2P 2-A2: Kitchen Chemistry
Total questions: 10
Worksheet time: 10mins
The number of atoms at the beginning of a chemical reaction are the same as the number of atoms at the end of that chemical reaction.
True
False
The coefficient in a chemical equation indicates
the number of atoms in each molecule in a chemical reaction
the number of molecules of each atom in a chemical reaction
the number of protons in each atom in a chemical reaction
the type of chemical bonding in a chemical reaction
In the formation ow water how many molecules of each substance are needed to balance the chemical equation
2 molecules of hydrogen reacts with 1 molecule of oxygen to produce 2 molecules of water
2 molecules of hydrogen reacts with 2 molecules of oxygen to produce 1 molecule of water
1 molecule of hydrogen reacts with 2 molecules of oxygen to produce 2 molecules of water
How many total atoms are involved in this balanced chemical equation.
4 Hydrogen and 2 Oxygen for total of 6 atoms
2 Hydrogen and 1 Oxygen for a total of 3 atoms
8 Hydrogen and 4 Oxygen for a total of 12 atoms
Synthesis Reactions
occur when reactants come together to form a compound
occur when one compound breaks apart into more than one element or compound
occur when one element in a compound is replaced by another element
occur when two elements are combined by magic
Decomposition Reactions
occur when reactants come together to form a compound
occur when one compound breaks apart into more than one element or compound
occur when one element in a compound is replaced by another element
occur when two elements are combined by magic
Displacement Reactions
occur when reactants come together to form a compound
occur when one compound breaks apart into more than one element or compound
occur when one element in a compound is replaced by another element
occur when two elements are combined by magic
Which of the following is a synthesis reaction?
4 Li + O2 → 2 Li2O
CH4 + 2 O2 → CO2 + 2 H2O
HBr + NaOH → NaBr + H2O
2 KF → 2 K + F2
Which of the following is a decomposition reaction?
4 Li + O2 → 2 Li2O
CH4 + 2 O2 → CO2 + 2 H2O
HBr + NaOH → NaBr + H2O
2 KF → 2 K + F2
Which of the following is a displacement reaction?
4 Li + O2 → 2 Li2O
CH4 + 2 O2 → CO2 + 2 H2O
HBr + NaOH → NaBr + H2O
2 KF → 2 K + F2
