Chapter 2 Basic Building Blocks adaptive practice

A vial of NaOH(s) contains:

• a clear liquid

• a colorless gas

• solid chunks

• a colored liquid

Answer explanation

Lesson 6

Tags

2.1

How would you write the chemical formula for liquid water?

• H₂O(s)

• H₂O(g)

• H₂O(l)

• H₂O(aq)

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

How many elements are included in the compound NaOH(s)?

• 1

• 2

• 3

• 4

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

What is the correct way to represent zinc nitrate powder?

• Zn(s)

• Zn(NO₃)₂(s)

• Zn(aq)

• Zn(NO₃)₂(aq)

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

Cu is an example of

• a mixture

• an element

• a solution

• a compound

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

In the formula for sodium sulfide, Na₂S what is the ratio of sodium, Na, to sulfur, S?

• 1:2

• 2:1

• 1:3

• 3:2

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

What is the correct way to represent a solution of copper (II) nitrate?

• Cu(s)

• Cu(aq)

• Cu(NO₃)₂ (s)

• Cu(NO₃)2 (aq)

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

In the formula for copper (II) nitrate, Cu(NO3)2(s), what does NO3 represent?

• copper

• nitric acid

• nitrate

• nitrite

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

The chemical formula for the compound copper (I) oxide is Cu2O. What is most likely to be true about the properties

of copper (I) oxide, copper, and oxygen?

• All three substances have similar properties.

• Copper (I) oxide has properties very similar to those of copper.

• Copper (I) oxide has properties very similar to those of oxygen.

• All three substances have different properties.

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-1

What does the symbol (s) stand for?

• solid

• gas

• solution

• aqueous

Answer explanation

Lesson 6

Tags

NGSS.MS-PS1-4