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What is produced when milk spoils?
Odor and gas
What is produced with fireworks?
Sound and light
What is the universal solvent?
Water
TRUE OR FALSE: oil is an aqueous solution
FALSE
TRUE OR FALSE: tea is an aqueous solution
TRUE
Salt is dissolved in water. Which is the solvent?
Water
Salt is dissolved in water. Which is the solute?
Salt
TRUE OR FALSE: Luster is a physical property
True
TRUE OR FALSE: Ductility and mailability are chemical properties
False
TRUE OR FALSE: Flammability is a chemical property
True
Physical or Chemical: photosynthesis
Chemical
Physical or Chemical: digestion
Chemical
Physical or Chemical: rusting
Chemical
Physical or Chemical: formation of bubbles and heat
Chemical
Physical or Chemical: breaking glass
Physical
Physical or Chemical: melting ice cream
Physical
Physical or Chemical: Ripping paper
Physical
Physical or Chemical: water freezing
Physical
Physical or Chemical: dissolving kool aid in water
Physical
Physical or Chemical: Baking cookies
Chemical
Chemical or Physical Property? Reacts with water
Chemical
Is this a chemical or physical property? Reacts with oxygen
chemical
Is this a chemical or physical property?
physical
Is this a chemical or physical property?
physical
Is this a chemical or physical property?
Chemical
Is this a chemical or physical property?
Physical
Is this a chemical or physical property?
Physical
Is this a chemical or physical property?
Physical
Is this a chemical or physical property?
Physical
Is this a chemical or physical property?
Physical
Is this a chemical or physical property?
Physical
Is this a chemical or physical property?
Chemical
Is this a chemical or physical property?
Chemical
The particles of a solvent move in between the particles of a solvent. When all the spaces have been filled, the solutions becomes...
Saturated
The particles of an insoluble substance can fit in between the particles of the solvent.
 
False
 
True
Bigger grains have more particles.
 
True
 
False
How can the substances in a solution be separated?
Through Evaporation
How can a suspension of two liquids be separated?
Through Decanting
How can a suspension of an insoluble solid and a liquid be separated?
Through Filtering
When a soluble substance is mixed with water, they form a...
Solution
When an insoluble substance is mixed with water, they form a...
Suspension
Solids with smaller grains dissolve faster when mixed with a solvent compared to solids with bigger grains.
 
True
 
False
Bigger grains contain more particles.
 
True
 
False
Sand and Flour do not dissolve in water. They are called...
 
Insoluble Substances
 
Soluble Substances
Solutes dissolve faster in...
 
Hot water
 
Cold water
Solutes dissolve faster when stirred.
 
True
 
False
Salt and Sugar dissolves when mix with water. They are called...
 
Soluble Substances
 
Insoluble Substances
If we mix salt and water, we form saltwater. Which is the solvent?
Water
If we mix salt and water, we form saltwater. Which is the solute?
Salt
This is making metals from ore using heat.
 
smelting
 
smothering
This a way of making something new out of of trash.
 
recycling
 
rewriting
These are rocks with metals in them.
 
ores
 
gemstones
What is the black liquid that is used to make plastic?
 
oil
 
ink
Which is an example of a metal?
 
gold
 
diamond
 
glass
This refers to materials that do not dissolve in water.
 
insoluble
 
soluble
This refers to materials that dissolves in water.
 
soluble
 
insoluble
Which state of matter is inside the tank?
gas
Which state of matter is shown?
solid
Which state of matter is shown?
liquid
How to separate sand from stones?
 
sieving
 
filtering
 
by magnet
How to separate sand from water?
 
filtering
 
sieving
 
hand-picking
How to separate pins from buttons?
 
by magnet
 
by hand
What equipment is shown?
magnet
What equipment is shown?
sieve
What equipment is shown?
funnel
True or False: If you combine metal shavings with sand, there is NO way you can separate them.
False
True or False: The best way to separate rocks and sand is to use a sieve to sift the sand, this will allow the sand to fall through and the rocks to stay.
True
True or False: You can use your hands or tweezers to separate salt from water.
False
True or False: A mixture must have at least two different materials.
True
What is the definition of a Mixture?
a combination of two or more materials that can be easily separated by some physical means.
If you had a mixture of rocks and sand and needed to separate them what method would work best?
Sieving
Milk is an example of...
Homogeneous mixture
Homogeneous Mixture is a Synonym of...
Solution
It is a mixture that contains two or more substances uniformly combined
Homogeneous
What type of mixture is this?
Heterogeneous
What is the filtration method used for?
A liquid from a solid
Which method can you use to separate sand and iron filings?
Magnetism
This separation method is called...
Filtration
What is this separation method?
distillation
The pure substances are classified in __________ mixtures
homogeneous
If we dissolve salt in water and heat the water, it becomes a vapour and leaves the salt. This is called
Evaporation
Name the two types of mixtures
Homogeneous and heterogeneous
is the amount of space a substance or object takes up
Volume
All metals are magnetic ( True or False)
Flase
Give an example of a gas
helium
Give an example of a liquid
water
Give an example of a solid
Table, chair, pencil
the ability of a substance to dissolve in another substance, such as sugar dissolving in water
Solubility
a state of matter in which the substance has a set shape and size
solid
the ability of a material (not an object) to sink or float in water
Relative Density
the form that matter is existing in (solid, liquid, gas)
Physical State
Properties of matter that can be observed, measured, or changed without changing the matter itself
Physical Properties
Anything that has mass and takes up space
Matter
a measure of the amount of matter in a sample
Mass
an attracting or repelling force that causes magnetic material to move
Magnetism
A state of matter in which the substance takes the shape of the container and has an unchanged volume when poured from on container to another
Liquid
A substance or object that does not allow energy to flow through it easily
Insulator
A state of matter in which the substance expands to take both the shape and volume of its container
Gas
a substance or object that allows energy to flow though it easily.
Conductor
Properties of a tracing paper
 
Translucent
 
Transparent
 
Rigid
 
Elastic
Properties of a fabric
 
Light
 
Soft
 
Waterproof
 
All of them
The property of light that allows a shadow to form
 
Opaque
 
Colourful
 
Insulator
 
Rigid
The property that allows us not to get wet in the rain
 
Waterproof
 
Opaque
 
Strong
 
Soft
Properties of a metal spoon
 
Rigid
 
Shiny
 
Conductor
 
Float
The property of an object to conduct electricity
 
Conductor
 
Insulator
 
Elastic
 
Heavy
Properties of a wood
 
All of them
 
Float
 
Opaque
 
Rigid
The property that allows an object to be stretched without breaking
 
Elastic
 
Opaque
 
Heavy
 
Magnetic
The property that describes an object stay on the floor bed of the water
 
Sink
 
Opaque
 
Shiny
 
Magnetic
Properties of a rubber boots
 
Insulator
 
Waterproof
 
Transparent
 
Magnetic
The property that allows an object to be bent without breaking
 
Flexible
 
Rigid
 
Luminous
 
Hard
Properties of a ceramic vase
 
All of them
 
Fragile
 
Opaque
 
Heavy
The property of an object that allows most of the light to pass through
 
Transparent
 
Translucent
 
Opaque
 
Conductor
The property that allows an object to produce its own light
 
Luminous
 
Transparent
 
Conductor
 
Soft
The property that describes an object stay on the surface of water
 
Float
 
Transparent
 
Sink
 
Rigid
What physical property is used in the following method
 
Particle size
 
Speed
 
Sedimentation
 
Boiling point
The properties of matter exploited in this method are
 
Boiling point
 
Particle size
 
Evaporation
 
Distillation
This technique will separate very small quantities of a mixture, its name is..
 
Chromatography
 
Filtration
 
Dissolution
 
Evaporation
The following method can be used if the compounds have different
 
Densities
 
Melting points
 
Weights
 
Boiling points
The following method is
 
magnetization
 
filtration
 
chromatography
 
sieving
The following method takes advantage of ...
 
Particle size
 
Boiling point
 
Filtration
 
Distillation
Property exploited by the following method
 
Boiling point
 
Size
 
Solubility
 
Density
What if I told you that this was your final exam for Science in Year 7?
 
Celebrate...
 
Good times...
 
Come on!
 
Let's celebrate!
State the methods (in order) to separate a mixture of salt, sand, iron filings and water.
 
Filtration, evaporation, magnetic separation.
 
Evaporation, decantation, magnetic separation.
 
Decantation, magnetic separation, filtration.
 
Filtration, magnetic separation, decantation.
Which of these methods is used often in forensic science?
 
Chromatography
 
Filtration
 
Distillation
 
Magnetic separation
Which separation method is commonly used before serving wine?
 
Decanting
 
Distillation
 
Evaporation
 
Centrifuging
What does the following set-up diagram show?
 
Distillation
 
Filtration
 
Froth flotation
 
Centrifuging
Why might scientists wish to separate substances?
 
They want to obtain pure substances from nature.
 
A mixture contains a contaminant they want to get rid of.
 
They want to learn what some mixtures are made of.
 
To make rock candy.
Which of these is a method for separating insoluble substances?
 
Filtration
 
Crystallisation
 
Distillation
 
Evaporation
A solution has formed when...
 
All the solute has disappeared.
 
The solvent changes colour.
 
Bubbles form.
 
The mixture goes cloudy.
Ruby made some instant black coffee. What would be the solute in her solution?
 
Granulated coffee
 
Milk
 
Water
 
It's not a solution
Which of the following substances is pure?
 
Distilled water
 
Cookie dough
 
Shampoo
 
Tomato sauce
Will wanted to extract essence from cinnamon bark. Which separation method would he use?
 
Distillation
 
Crystallisation
 
Filtration
 
Froth flotation
The substance which is able to pass through a filter is known as the...
 
Filtrate
 
Residue
 
Liquid
 
Distillate
Which of these substances do we often use a centrifuge to separate?
 
Blood
 
Ink
 
Juice
 
Paint
What property of matter allows you to utilise distillation as a separation method?
 
Boiling point
 
Magnetism
 
Particle size
 
Density
Which of these separation methods would you use to separate lead and iron filings?
 
Magnetic separation
 
Filtration
 
Gravity separation
 
Centrifuging
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