Chemistry Final Review

Which coefficients go in the blanks to balance this chemical equation?

• 4, 3, 2

• 2, 3, 1

• 1, 1, 1

• 3, 2, 4

Tags

NGSS.HS-PS1-7

What type of reaction is this? (select all that apply)

Cl₂(g) + 2KBr(aq) → 2KCl(aq) + Br₂(l)

• Single Replacement

• Redox

• Double Replacement

• Neutralization

Predict the products of the following neutralization reaction. If the reaction would not happen, then select No reaction.

HBr (aq) + NaOH(aq) → ?

• NaBr(aq) + H2O(l)

• HNa(aq) + BrOH(aq)

• No Reaction

Which of the following can mercury (Hg) replace in a single replacement reaction? (select all that apply)

• Gold (Au)

• Silver (Ag)

• Copper (Cu)

• Lead (Pb)

Based on the energy profile diagram, describe the net energy change in a chemical reaction.

The energy of the reactants is ​ (a)   than the energy of the products resulting in a net ​ (b)  

energy change.

• less

• positive

• greater

• negative

Tags

NGSS.HS-PS1-4

Which of the following is a balanced chemical equation for the reaction between hydrogen gas and oxygen gas to form water?

Tags

NGSS.HS-PS1-7

• Synthesis

• Decomposition

• Single displacement

• Double displacement

What is the main difference between a combustion reaction and a synthesis reaction?

• Combustion must involve oxygen, while synthesis does not.

• Synthesis produces a single product, while combustion can produce multiple products.

• Combustion releases energy, while synthesis absorbs energy.

• Synthesis involves only one reactant, while combustion requires two or more.

Which of the following is an example of a single replacement reaction?

Tags

NGSS.MS-PS1-2

Which of the following is an example of a double replacement reaction?