CA Elements

What is the chemical symbol for Magnesium?

• M

• Mg

• Ma

• mg

What is the chemical formula for water?

• h2o

• HO

• H2O

• 2HO

What is the chemical symbol for hydrochloric acid?

• HCl

• hcl

• H3Cl

• H Cl

Choose the most correct answer for this question. What does burning magnesium produce?

• Ash

• Heat

• Smoke

• Bright light

What happens when Hydrogen is lit with a match?

• It burns

• It pops

• Nothing happens

• I jump

What do you observe when magnesium is dropped in hydrochloric acid?

• It floats

• It sinks

• It bubbles

• It does nothing

What is produced when magnesium is dropped in hydrochloric acid?

• Magnesium ash

• Hydrogen gas

• Chlorine solid

• Acid gas

What is the equation for splitting water?

• 2H2O - 4H + O

• 2H2O - H + O2

• H2O - 4H + O2

• 2H2O - 4H + O2

What is the equation for burning magnesium?

• Mg + O2 - MgO2

• 2Mg + O2 - MgO2

• 2Mg + O2 - MgO

• 2Mg + O - MgO2

What is the equation for dissolving magnesium?

• Mg(s) + 2 HCl(aq) --> MgCl ₂(aq) + H ₂(g)

• Mg + 2 HCl --> MgCl + H ₂

• Mg(s) + HCl(aq) --> MgCl (aq) + H ₂(g)

• Mg(s) + 2 HCl(aq) --> MgCl ₂(aq)