Chemistry end of the year final review

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction
• Mass is created in a physical change
• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
• Mass is never created or destroyed

Tags

NGSS.HS-PS1-7

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 

• 4g
• 5g
• 9g
• 14g

Tags

NGSS.HS-PS1-7

Write the formula for copper (I) phosphide?

• Cu₃P
• CuP
• Cu₁P
• CuP₃

Write the formula for vanadium (IV) carbonate

• V(CO₃)₂
• V₄C
• V(CO₃)₄
• V₄(CO₃)

Name this compound:
Li₂SO₃

• Lithium sulfate
• Lithium sulfite
• Lithite sulfide
• Sulfur lithite

What is the formula for copper (II) sulfate?

• Cu₂SO₄
• CuSO₃
• CuS
• CuSO₄

What is the formula for silver nitrate?

• Ag₃NO
• AgNO₃
• Ag(NO₃)₂
• Ag₂NO₃

What is the formula for iron (III) chloride

• FeCl
• FeCl₃
• FeClO₃
• Fe₃Cl

What is the formula for ammonium sulfate

• NH₄SO₄
• (NH₄)₂SO₄
• NH₄S
• (NH₄)₂S

How many neutrons would Fe-56 have?

• 56
• 26
• 30
• 33