Grade 10 Chem Review

A(n) _______ is a substance with a pH greater than 7.

• Base
• Acid
• Buffer
• Water

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

A pH of 3 is how many times more acidic than a pH of 5?

• 2

• 20

• 10

• 100

Water has a neutral because

• it has more H+ ions than OH-

• it has more OH- ions than H+

• it does not produce any ions

• it has an equal amount of H+ and OH- in solution

Tags

NGSS.HS-ESS2-5

According to the pH range which substance is more acidic than lemon juice

• Hydrochloric acid
• cabbage
• milk

Tags

NGSS.MS-PS1-2

A solution has a pH of 7.0.  What would happen to the pH if H ions were added?

• pH would go up
• pH would go down
• pH would stay the same
• None of these

Tags

NGSS.MS-PS1-2

Identify this type of reaction: 
Al (s) + HCl (aq) → AlCl₃ (aq) + H₂ (g)

• Precipitation
• Synthesis
• Combustion
• Single Replacement

The Law of Conservation of Mass states that the total mass of the reactants should be

• More than the mass of the products

• Equal to the mass of the products

• Ignored during the reaction

• Less than the mass of the products

Tags

NGSS.MS-PS1-5

Which of the following reactions involves the ions of two compounds exchanging places to form two new compounds?

• Synthesis

• Double Displacement

• Combustion

• Single Displacement

When balancing equations, the rule is that you can only add, change, and remove ____________

• Coefficients

• Mass

• Subscripts

• Elements

Tags

NGSS.MS-PS1-5