Chemistry Reactions Quiz

The process by which hydrogen and oxygen form water can be classified as what type of reaction?

• decomposition reaction

• precipitate reaction

• synthesis reaction

• single-displacement reaction

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Hydrogen peroxide is a chemical used to clean bacteria out of cuts. It does this through creating germ-eating oxygen in this decomposition reaction. What set of coefficients, respectively, balance this equation? H2O2 → H2O + O2

• 1 → 1,2

• 2 → 2,1

• 2 → 2,2

• 4 → 4,1

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following neutralization reactions follows the law of conservation of mass?

• HCl + Na2O > NaCl + H2O

• HNO3 + Na2O > NaNO3 + H2O

• HCl + MgO > MgCl2 + 2H2O

• 2HCl + Na2O > 2NaCl + H2O

Tags

NGSS.MS-PS1-5

4Fe + 3O₂ → 2Fe₂O₃ is the chemical reaction that takes place when rust is formed. Which material is the product(s)?

• Fe

• O₂

• Fe and O₂

• Fe₂O₃

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

A calcium carbonate molecule has 1 calcium atom, 3 oxygen atoms, and 1 carbon atom. Which of the following shows the chemical formula for calcium carbonate?

• 3CaCO

• Ca₂CO₂

• CaCO₃

• CaC₂O₃

Tags

NGSS.MS-PS1-1

Propane burns in oxygen to produce carbon dioxide and steam. The unbalanced equation for this reaction is: C₃H₈ + O₂ → CO₂ + H₂O. Use coefficients to balance this equation.

• C₃H₈ + 3 O₂ → 3 CO₂ + 4 H₂O

• C₃H₈ + O₂ → 3 CO₂ + 4 H₂O

• C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

• 2 C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

Tags

NGSS.MS-PS1-5

A double-replacement reaction will occur if water, gas, or a precipitate forms when two ionic compounds in solution are combined. Which is the generalized formula for this type of reaction?

• D + BC > BD + C

• AB + CD > AD + CB

• A + BC > AC + B

• A + B > AB

During a physical science lab investigating chemical reactions, several students placed a 60g antacid tablet in a 200g zip-lock bag. They recorded the masses of the tablet, and the bag. Then they added 70 grams of water and quickly sealed the bag. The tablet began to fizz and soon disappeared. The bag was filled with gas. If the mass of the liquid after the reaction is completed is still 70 grams, how much gas is produced?

• 30 grams

• 50 grams

• 60 grams

• 90 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following chemical reactions, as written, observes the law of conservation of mass?

• Al + HCl + H₂ + AlCl₃

• Al + HCl → H₂ + AlCl₃

• 2 Al + 6 HCl → 3 H₂ + 2 AlCl₃

• 3 Al + 6 HCl → 3 H₂ + 3 AlCl₃

Tags

NGSS.MS-PS1-5