2.5 Evaporation & Distillation

Review;

We've looked at the following lessons so far;

• 2.1; Mixtures

• Solutions

• Solubility

Let's see what you remember from these lessons so far!

Multiple Select

You brushed your teeth today 😂

• NO

• FALSE

• YES

• MAYBE

Multiple Choice

A mixture is a physical combination of two or more substances that are NOT chemically joined together

• TRUE

• FALSE

Multiple Choice

How could you separate atoms of elements in a compound?

• Using a chemical reaction

• Using a magnet

Multiple Choice

They are made up of two or more elements combined chemically

• Mixtures

• Compounds

Multiple Choice

The graph shows the temperature rise of two substances over a period of time. Which of the two is impure?

• Green substance

• Red substance

Multiple Choice

Page 74; What is a solution?

• A mixture of a solid

• A mixture of a liquid

• A mixture of a liquid with a solid

• A mixture of a liquid with a solid or a gas

Multiple Choice

Page 74

In a water & sugar solution the water is the _______

• Solute

• Solvent

• Solution

Multiple Choice

Page 74

In a water & sugar solution the sugar is the _______

• Solute

• Solvent

• Solution

Multiple Choice

The substance being dissolved in a solution.

• sands

• solute

• solvent

• alloy

Multiple Choice

The substance in which a solute is dissolved

• sands

• solvent

• alloy

• negative particles

Multiple Choice

A mixture that appears to be evenly mixed throughout:

• an atom

• a compound

• a homogeneous mixture

• a heterogeneous mixture

Multiple Choice

A ______________ mixture is one that does not have a uniform composition.

• heterogeneous

• homogenous

• pure substance

Multiple Choice

Page 76; A saturated solution......

• contains the maximum amount of solute

• cannot take any more solute

• has some undissolved substance in the container

• All of these

Multiple Choice

A solution with solute that dissolves until it is unable to dissolve anymore, leaving the undissolved substances at the bottom.

• Unsaturated solution

• Saturated solution

Multiple Select

A type of solution that contains less solute than the maximum amount it can dissolve.

• saturated solution

• unsaturated solution

Multiple Choice

Define the term soluble.

• Can dissolve in water

• Cannot dissolve in water

• Partially dissolves in water

Multiple Choice

Define the term insoluble.

• Can dissolve in water.

• Cannot dissolve in water.

• Partially dissolves in water.

Multiple Choice

The maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.

• solubility

• concentrated

• diluted

• surface area

Multiple Select

Page 77; How does temperature affect the solubility of sugar?

• The higher the temperature the less sugar you can dissolve

• The higher the temperature the more sugar you can dissolve

• The lower the temperature the more sugar you can dissolve

• The lower the temperature the less sugar you can dissolve

Multiple Choice

A super saturated solution ;

• ...is a solution that contains less than the maximum amount of solute that is capable of being dissolved

• ....contains undissolved solute

• ....is a solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature

• ...is the solution that contains the greatest mass of solute that can dissolve

2.5 Evaporation & Distillation

Lesson objectives;

• Explain how to use evaporation to separate mixtures

• Explain how distillation works

hi! this is Lauren how are you? are you good?. good to know.

bye!

Multiple Choice

TRUE of FALSE

You can obtain salt from sea water

• TRUE

• FALSE

Multiple Choice

Page 80; What process is used to separate salt from sea water?

• Evaporation

• Filtration

• Solubilizing

• Ditration

Multiple Choice

Page 80; Evaporation helps some glues to dry

• TRUE

• FALE

Multiple Choice

Page 80; How does evaporation helps some glues to dry

• The solvent evaporates, a sticky substance remains, joining the surfaces

• The solute evaporates, a sticky substance remains, joining the surfaces

• The solvent evaporates, a wet substance remains, joining the surfaces

• The solute evaporates, a sticky substance remains, joining the surfaces

Multiple Choice

Page 80; ______ is important for batteries

• Lithium

• Sodium

• Potassium

• Rubidium

Multiple Choice

Page 80; Huge amounts of water are dissolved under a dessert in _______

• Namibia

• Bolivia

• Sudan

• Chile

Multiple Select

Select the uses of evaporation from this list

• Separates lithium from water

• Makes glues dry

• Separates sand from sugar

• Separates salt from sea water

Multiple Choice

The earliest distillation apparatus was known as the ......

• alembic

• alamo

• albuna

• None of these

Multiple Choice

Page 81; You can use _____________ to get safe drinking water from the sea.

• evaporation

• distillation

• filtration

• solution

Multiple Choice

Distillation is;

• Distillation is a process that uses evaporation and condensation to obtain a solvent from a solution

• Distillation is a process that uses evaporation to obtain a solvent from a solution

• Distillation is a process that uses condensation to obtain a solvent from a solution

• Distillation is a process that uses filtration to obtain a solvent from a solution

Multiple Choice

Page 81; Which of the following is step 1 of the distillation process?

• Water in the solution boils

• Steam leaves the solution

• Steam travels through the condenser, and cools down

• Liquid water drips into the beaker

Multiple Choice

Page 81; Which if the following is step 2 of the distillation process?

• Water in the solution boils

• Steam leaves the solution

• Steam travels through the condenser, and cools down

• Liquid water drips into the beaker

Multiple Choice

Page 81; Which if the following is step 3 of the distillation process?

• Water in the solution boils

• Steam leaves the solution

• Steam travels through the condenser, and cools down

• Liquid water drips into the beaker

Multiple Choice

Page 81; Which if the following is step 4 of the distillation process?

• Water in the solution boils

• Steam leaves the solution

• Steam travels through the condenser, and cools down

• Liquid water drips into the beaker

• the steam condenses to form liquid water

Multiple Choice

Page 81; Which if the following is step 5 of the distillation process?

• Water in the solution boils

• Steam leaves the solution

• Steam travels through the condenser, and cools down

• Liquid water drips into the beaker

• the steam condenses to form liquid water

Multiple Choice

True of False;

Saudi Arabia has little rain and no permanent rivers.

• TRUE

• FALSE

Multiple Choice

Saudi Arabia has little rain and no permanent rivers. The country uses _________ to obtain drinking water from sea water

• Distillation

• Evaporation

• Condensation

Multiple Choice

Distillation is used to separate ______.

• an insoluble solid from its solution.

• a soluble solid from its solution.

Multiple Choice

Which of the following is the best method of obtaining pure water from seawater?

• Filtration

• distillation

• sublimation

Multiple Choice

Which two process are involved in distillation technique?

• Freezing and evaporation

• Evaporation and boiling

• Boiling and condensation

Multiple Choice

What process is occurring at the point labelled X?

• The process by which the substance changes from liquid to vapor.

• The process by which the substance changes from gas to liquid.

• A process where it separates two soluble liquid with a significant difference in their boiling point.

• The process where solid changes to vapor.

Multiple Choice

What process is occurring at the point labelled Y?

• Evaporation

• Condensation

• Sublimation

• Crystallization

Multiple Choice

During distillation of a sugar solution, what is present at C?

• Sugar solution

• Liquid water

• Water vapor

Multiple Choice

In the apparatus shown, what is number 3 called?

• Thermometer

• Distillation Flask

• Burner

• Condenser

Multiple Choice

Which answer lists the two processes involved in distillation in the correct order?

• Boiling, then condensation

• Condensation, then boiling

• Dissolving, then condensing

• Boiling, then dissolving

Multiple Choice

Evaporation occurs when water changes into 

• transpiration

• snow

• solid

• vapor

Multiple Choice

the change of state from a liquid to a gas

• water cycle

• evaporation

• precipitation

• condensation

Multiple Choice

Condensation

• A gas changes into a liquid

• A liquid changes into a gas

• A solid changes into a liquid

• A liquid changes into a solid

Multiple Select

Condensation is the opposite of evaporation.

• True

• False

Multiple Choice

Sam kept some water outside in the sun next day he saw nothing in the glass what happen to the water?

• It disappeared

• It evaporated

• Magic

Multiple Choice

The diagram shows the apparatus for separating soil and water. What are the labelled parts?

• A = distillate, B = filtrate

• A = filtrate, B = residue

• A = residue, B = filtrate

• A = residue, B = distillate

Multiple Choice

Put the two processes used in fractional distillation in the correct order.

• Evaporating and then melting

• Evaporating and then condensing

• Condensing and then evaporating

• Melting and then condensing

Multiple Choice

Name the separation technique

• Centrifuge

• Crystallisation

• Distillation

• Evaporation

Multiple Choice

Which of the following techniques can we use to separate homogeneous mixtures?

• Crystallisation

• Distillation

• Evaporation

• All of the above

Multiple Choice

Name the separation technique

• Distillation

• Crystallisation

• Evaporation

• Condensation

Multiple Choice

Name the separation technique

• Filtration

• Evaporation

• Distillation

• Separation