LQA BIOLOGY 8 THIRD TERM

1) A liquid is determined to be an acid or base depending on the type of ____ in the liquid.

• A Protons

• B) Ions

• C) Elements

• D) Neutrons

2) What is the pH scale?

• A) A method for measuring the protons in a solution

• A measurement of how acidic or basic a liquid is

• A special microscope used to look at acids

• None of the Above

3 What measurement of the pH scale is considered a neutral liquid?

• 0

• 3

•  7

• A) 9

What is rate of reaction?

• A) How big a reaction is

• How much gas a reaction produces

• How loud a reaction is

• How fast a reaction is

What is required for a reaction to occur?

• A) Collisions

• Sufficient Energy

• Collisions with sufficient energy

• c Nothing

5 What does NOT happen when the temperature is increased?

• A) Increases the rate of reaction

• b Increases the concentration of the reaction

• c Stabilises a reaction

• d More particles collide in the correct orientation

In an exothermic reaction, heat is ...

• A) taken in

• given out

• break out

• A) speed out

The amount of a substance in a given volume.

• Concentration

• surface area

• catalyst

• temperature

9 In an exothermic reaction the products have

• A) more energy than the reactants

• b the same energy as the reactants

• less energy than the reactants

• A) no energy

10) How heavy an object is for its size it its______?

• A) Volume

• b) Mass

• c) Density

• d) Shape