CAEC Life and Physical Sciences 2

Question 1

What is the function of mitochondria in a cell?

Accepted Answer

Producing energy (ATP) through cellular respiration

Answer

Mitochondria are the powerhouses of the cell, producing ATP through cellular respiration using oxygen and glucose.

Question 2

What is Newton's Second Law of Motion?

Accepted Answer

Force equals mass times acceleration (F = ma)

Answer

Newton's Second Law states that the force acting on an object equals its mass multiplied by its acceleration (F = ma).

Question 3

What is the process by which water vapour in the atmosphere cools and becomes liquid water?

Accepted Answer

Condensation

Answer

Condensation is the process by which water vapour cools and changes state from a gas to a liquid, forming clouds, fog, or dew.

Question 4

Which of the following is an example of a chemical change?

Accepted Answer

Wood burning in a fire

Answer

Burning wood is a chemical change because combustion produces new substances (carbon dioxide, water, and ash) with different properties.

Question 5

What is the difference between an element and a compound?

Accepted Answer

An element contains only one type of atom; a compound contains two or more different elements chemically bonded together

Answer

An element consists of only one type of atom and cannot be broken down into simpler substances; a compound is formed when two or more elements chemically combine.

(CAEC) Canadian Adult Education Credential Practice Test

(CAEC) Canadian Adult Education Credential Practice Test

CAEC Life and Physical Sciences 2