Chemistry Final

In a chemical equation, “dissolved in water” is represented by which of the following symbols?

• (s)
• (l)
• (g)
• (aq)

How many atoms of oxygen are represented in

• 2
• 4
• 8
• 16

Tags

NGSS.MS-PS1-1

A solid produced from two aqueous solutions in a chemical reaction is known as a(n)

• precipitate
• oxide
• salt
• hydrocarbon

Classify the following reaction:

• double replacement
• single replacement
• combustion
• decomposition

To balance a chemical equation, it may be necessary to change the substances’

• subscripts
• superscripts
• coefficients
• formulas

Which of the following statements best describes the following reaction?

• it is a double replacement reaction
• it is a decomposition reaction
• it is a synthesis reaction
• the reaction will not occur

Tags

NGSS.MS-PS1-2

Which of the following would not be considered evidence of a chemical reaction?

• Formation of a precipitate
• Production of a gas
• State of matter change
• Sudden release of light

Tags

NGSS.MS-PS1-2

Which of the following statements best describes the following reaction?

• it is a single replacement reaction
• it is a decomposition reaction
• it is a synthesis reaction
• the reaction will not occur

Tags

NGSS.MS-PS1-2

Which of the following best represents the general equation for a synthesis reaction?

• AB -> A + B
• A + B -> AB
• AX + B -> BX + A
• AX + BY -> AY + BX

Balance the following reaction.

• 1 + 1 ->1
• 2 + 1 -> 2
• 2 + 2 -> 2
• 3 + 1 -> 3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5