ACP Chemistry Final Review

How many valence electrons does a neutral atom of oxygen have?

• 4

• 6

• 2

• 8

Tags

NGSS.HS-PS1-1

Which of the following correctly represents a magnesium ion?

• Mg⁺²

• Mg⁺¹

• Mg^-1

• Mg^-2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the chemical formula for beryllium phosphate?

• Be₂(PO₄)₃

• Be₃(PO₄)₂

• BeP

• BePO₄

What is the molar mass of ammonium sulfate, (NH₄)₂SO₄?

• 114.11 g/mol

• 63.08 g/mol

• 132.16 g/mol

• 528.64 g/mol

Which set of coefficients would balance the following chemical reaction?

_AlCl₃ + _NaOH --> _NaCl + _Al(OH)₃

• 3,1,1,3

• 1,3,3,1

• 1,1,1,1

• 1,3,1,1

Tags

NGSS.HS-PS1-7

What is the mass of a 4.3 mol sample of Ca(NO₃)₂?

• 164.09 g

• 705.6 g

• 70 g

• 710 g

Consider the reaction

2H₂O₂(aq) --> 2H₂O(l) + O₂(g)

What happens to the mass of the system as the reactants are converted to products?

• It stays the same

• It decreases

• It increases

• Not enough info given

Tags

NGSS.HS-PS1-7

Consider the reaction

CaCl₂ + 2AgNO₃ --> 2AgCl + Ca(NO₃)₂

If 2.0 mol of CaCl₂ is mixed with 5.0 mol of AgNO₃, what will be the limiting reagent/reactant?

• AgCl

• CaCl₂

• AgNO₃

• Ca(NO₃)₂

Tags

NGSS.HS-PS1-7

Consider the reaction

CaCl₂ + 2AgNO₃ --> 2AgCl + Ca(NO₃)₂

If 4 mol of AgNO₃ react completely according to the equation, how many moles of Ca(NO₃)₂ will be produced?

• 2

• 4

• 1

• 8

Tags

NGSS.HS-PS1-7

At constant temperature and volume, decreasing the number of moles of gas decreases the pressure of the sample because

• The number of collisions decreases

• The mass of the sample decreases

• The kinetic energy of the gas molecules decreases

• The kinetic energy of the gas molecules increases