WorksheetsChapter 3
Total questions: 12
Worksheet time: 14mins
Chemical Equation
A representation of a chemical reaction
the starting materials in a chemical reaction
the new substances that are formed in a chemical reaction
tells how many atoms, molecules, or formula units take part in a reaction
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
yes
no
Balance this equation
_Al +_HCl -->_AlCl3 + _H2
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
How many oxygen atoms are present in the following?
4Ca(OH)2
4
6
8
1
2KI + ____Cl2 → 2KCl + I2
Identify the Reactants in this equation.
A
B
What state of matter is this substance?
solid
liquid
gas
aqueous
What are the blue numbers called?
oxidation numbers
subscripts
group numbers
product numbers
How many atoms of nitrogen are present in this molecule?
1
2
3
4
Balance this equation, CaCO3(s) → CaO(s) + CO2(g)?
3,1,2
1,1,1
1,3,1
2,6,3
Balance this equation, AlCl3 + NaOH → Al(OH)3 + NaCl
3,1,3,1
1,3,3,1
1,1,1,3
1,3,1,3
