CPC Unit 6 Review Part TWO (8.1 8.2)

For each statement, tell whether or not it is a chemical reaction.

Groups:

(a) Chemical Reaction

,

(b) NOT

• drain cleaner mixed with water gets warm

• ice melts

• tomato smells rotten

• drink glass breaks into pieces

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

For each statement, tell whether or not it is a chemical reaction.

Groups:

(a) Chemical Reaction

,

(b) NOT

• baking powder makes a gas that makes bread rise

• leaves turn yellow and red as season changes

• candle wax burns

• molten candle wax solidifies

Tags

NGSS.HS-PS1-2

The fuel for the space shuttle is hydrogen, which burns in oxygen to produce water vapor and energy. In this chemical reaction, hydrogen is a(n) ​ (a)   , oxygen is a(n) ​ (b)   , and water vapor is a(n) ​ (c)   .

• reactant
• product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The fuel for the space shuttle is hydrogen, which burns in oxygen to produce water vapor and energy. In a chemical equation for this reaction, a(n) ​ (a)   is used to separate hydrogen and oxygen from water vapor and energy. A(n) ​ (b)   is used to separate the symbols for hydrogen and oxygen.

• arrow
• plus sign
• minus sign
• equals sign

The fuel for the space shuttle is hydrogen, which burns in oxygen to produce water vapor and energy. A(n) ​ (a)   symbol is used to tell the state of hydrogen in the reaction, a(n) ​ (b)   symbol is used for the state of oxygen, and a(n) ​ (c)   symbol is used for the state of water vapor.

• (g)
• (s)
• (l)
• (aq)

Tags

NGSS.MS-PS1-2

Sodium metal reacts with water vapor in air to form solid sodium hydroxide and hydrogen.

Match each equation to what type it is.

• balanced chemical equation

• 2Na(s) + 2H₂O(g) →

  2NaOH(s) + H₂(g)

• skeleton equation

• sodium(s) + water(g) → sodium hydroxide(s) + hydrogen(g)

• word equation

• Na(s) + H₂O(g) →

  NaOH(s) + H₂(g)

Tags

NGSS.HS-PS1-7

In the first step of refining zinc metal from its zinc sulfide ore, the ore is heated in the presence of oxygen. The products are solid zinc oxide and sulfur dioxide gas.

Which is the correct word equation?

• zinc sulfide(s) + oxygen(g)

  →

  zinc oxide(s) + sulfur dioxide(g)

• zinc sulfide(g) + oxygen(s)

  →

  zinc oxide(aq) + sulfur dioxide(g)

• znc oxide(s) + sulfur dioxide(g) →

  zinc oxide(s) + oxygen(g)

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

In the first step of refining zinc metal from its zinc sulfide ore, the ore is heated in the presence of oxygen. The products are solid zinc oxide and sulfur dioxide gas.

Which is the correct skeleton equation?

• ZnS(s) + O₂(g)

  →

  ZnO(s) + SO₂(g)

• 2ZnS(s) + 3O₂(g)

  →

  2ZnO(s) + 2SO₂(g)

• ZnO(s) + C(s)

  →

  Zn(g) + CO(g)

Tags

NGSS.HS-PS1-7

Assume that Q, T, X, and Z are symbols for elements. Match each equation with the reaction type it represents.

• combustion

• 2C(s) + O₂(g) → 2CO₂(g) + energy

• double-replacement

• QT → Q + T

• synthesis

• Q + Z → QZ

• decomposition

• QT + XZ → QZ + XT

• single-replacement

• Q + XZ → X + QZ

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The following equation represents which TWO types of reactions?

2C(s) + O₂(g) → 2CO₂(g) + energy

• Combustion reaction

• Synthesis reaction

• Decomposition reaction

• Single Replacement reaction

• Double Replacement reaction