Second Semester Chemistry Exam Review Part 1

In a chemical equation, is it true that -

• the reactant side and product side can have different numbers of atoms for each element

• there can be different elements on the reactant side and the product side

• an element or compound must be accompanied by a phase change

• the coefficients indicate the number of moles of each reactant used and the number of moles of each product made

Tags

NGSS.HS-PS1-7

Which of the following models best demonstrates a balanced chemical equation?

• F
• G
• H
• J

Tags

NGSS.MS-PS1-5

The reactants are on the left side of the chemical equation.

• True
• False

Tags

NGSS.MS-PS1-5

All of the following reactions are correctly balanced except-

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of these is NOT a sign that a chemical change has occurred?

• A loss of transparency

• An unexpected color change

• A temperature change

• The formation of a precipitate

Tags

NGSS.MS-PS1-2

AB + CD →AD + CB

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

Identify this type of reaction,
Cl₂ + 2KI _-->  I₂ + 2KCl

• Synthesis
• Single displacement
• Double displacement
• Decomposition

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr
• KClO₃ --> KCl + O₂
• HgO + Cl₂-->HgCl + O₂
• Cl₂ + NaBr --> NaCl + Br₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

2 AgNO₃ + Cu --> Cu(NO₃)₂ + 2 Ag 

• single displacement
• double displacement
• decomposition
• synthesis

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The following is what type of reaction:
NH₃ + HCl  → NH₄Cl

• Synthesis
• Decomposition
• Single Replacement Replacement
• Double Replacement Replacement

Tags

NGSS.MS-PS1-2