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Question 1

What is a Substance

Answer 1

Substance is a matter that is always made from the same combination of atoms

Question 2

What are two categories of substances

Answer 2

Substances can be elements or compounds

Question 3

Distinguish between elements and compounds

Answer 3

Element is a matter made of one type of atom while compounds are matter made of two or more elements that are bonded together chemically

Question 4

Define a mixture

Answer 4

A mixture is two or more substances that are blended together physically but Are not chemically bonded together

Question 5

Distinguish between homogeneous and heterogeneous mixtures

Answer 5

Heterogeneous mixture is a mixture of substances are not evenly mixed and usually more than one face is formed in such kinds of mixtures such as oil and water while a homogeneous mixture is a mixture where substances are evenly mixed and usually one phase is formed in such kinds of mixtures like for example salt and water

Question 6

Another name for a homogeneous mixtures

Answer 6

Solution

Question 7

Give two ways to separate homogeneous mixtures

Answer 7

Crystallization of operation simple distillation

Question 8

Gift two ways to separate heterogeneous mixtures

Answer 8

Filtration decantation using separatory funnel

Question 9

Distinguish between Solute and solvent

Answer 9

A solute Is a substance that is dissolved while solvent is a substance that does the dissolving

Question 10

What does the type of a solution depend on

Answer 10

Solution can be a solid liquid or gas depending on the type of solvent so if the solvent is a solid than the solution is a solid and if the solvent is a liquid than the solution is also liquid

Question 11

Distinguish between aqueous and non-aqueous solution

Answer 11

If the solvent is water then the solution is aqueous and if the solvent is a liquid other than water water than the solution is not aqueous

Question 12

Define polar molecule

Answer 12

Polar molecule is said to be polar due to uneven distribution Of electrons
Where it has a slight positive end and a slight negative end

Question 13

Define concentration

Answer 13

Concentration is the amount of solute dissolved in a certain amount of solution

Question 14

How to make a solution with concentrated

Answer 14

Add more solute Or evaporate part of the solvent

Question 15

How to make a solution more diluted

Answer 15

Add more solvent

Question 16

Define solubility

Answer 16

Gullibility is the maximum amount of solute that can be dissolved in a Definite amount of solvent under constant temperature and pressure

Question 17

Distinguish between saturated solutions and unsaturated solutions 

Answer 17

A saturated solution is a solution that contains the maximum amount of solute that can be dissolved in a solution under constant temperature and pressure while non-saturated Solution is a solution that can still dissolve more solute in the given temperature and pressure