Compounds and Mixtures

Question 1

Define compound

Answer 1

A substance made up of different elements joined together by a chemical bond

Question 2

Describe a pure substance

Answer 2

A substance that cannot be separated into other kinds of matter and always has a definite and constant composition

Question 3

Describe a heterogeneous mixture

Answer 3

A mixture in which the composition is not uniform throughout and different components are observed

Question 4

Describe a homogenous mixture

Answer 4

A mixture in which the components mix with each other and its composition is uniform throughout the solution

Question 5

Define melting point

Answer 5

The temperature at which the solid and liquid forms of a pure substance can exist in equilibrium

Question 6

Define boiling point

Answer 6

The temperature at which the substance’s vapour pressure is equal to the pressure of the gas

Question 7

Define reactivity

Answer 7

The impulse for which a chemical substance undergoes a chemical reaction, either by itself or with other materials, with an overall release of energy

Question 8

Define strength

Answer 8

In regard to pH level

A strong acid donates protons readily and a strong base accepts protons readily

Question 9

Define density

Answer 9

The measurement of how tightly a material is packed together