First Semester Final Review #7: Reaction types

Which two words, in order, correctly complete the statement?

Two major categories of chemical compounds are ______ and ______

• atomic: synthesis

• ionic: molecular

• organic: allotropic

• main: covalent

What is the formula for boron trichloride?

• B₂Cl₃

• BCl₃

• B₃Cl

• BrCl₃

The electrons involved in the formation of a chemical bond are

• dipoles

• s electrons

• Lewis electrons

• valence electrons

Tags

NGSS.HS-PS1-1

An element in the activity series can replace any element

• above it on the list

• below it on the list

• in its group

• in the periodic table

The reaction represented by the equation 2Mg(s) + O₂(g) → 2MgO(s) is a

• synthesis reaction

• decomposition reaction

• double replacement reaction

• single replacement reaction

Which type of reaction is the following: 3Mg + Fe₂O₃ → 2Fe + 3MgO

• Synthesis

• Single replacement

• Double replacement

• Decomposition

When a solid produced by a chemical reaction separates from the solution it is called

• a precipitate

• a molecule

• a reactant

• the mass of the product

What is the equation for the combustion of methane (CH₄)?

• CH₄(g) + O₂(g) → CO₂(g) + H₂O(l)

• CH₄(g) + H₂O(l) → CO₂(g) + O₂(g)

• CO₂(g) + O₂(g) → CH₄(g) + H₂O(l)

• CH₄(g) → CO₂(g) + H₂O(l)

Tags

NGSS.HS-PS1-4

Predict what happens when calcium metal is added to a solution of magnesium chloride.

• Magnesium calcite forms

• gaseous calcium is produced

• no reaction occurs

• calcium chloride forms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In what kind of reaction does a single compound produce two or more simpler substances?

• decomposition reaction

• single replacement reaction

• synthesis reaction

• ionic reaction