States
Separation Techniques
Substances and mixtures
Soluble and insoluble
100
I am the state of matter that has particles furthest apart
Gas
100
Which separation technique is best for separating the mixture of jelly beans and m&m's
Hand separation
100
Name the 2 types of mixtures
Homogeneous- heterogeneous
100
Define what a soluble substance is and provide an example of a substance that is soluble in water
A soluble substance is a solute that can dissolve in a solvent. salt, sugar, instant coffee, baking soda, honey.
200
My particles can slide past one another
Liquid
200
Explain how filtration works
separates solid particles from a liquid by passing the mixture through a material that blocks the solids while letting the liquid through.
200
What is a pure substance, provide 1 example
A pure substance is an element or compound that is made of only 1 type of particle cannot be separated via physical methods - H2O- Gold - Silver - Oxygen - Hydrogen - CO2 - Salt
200
Define what an insoluble substance is and provide an example that is insoluble in water
An insoluble substance is a solute that cannot dissolve in a solvent. Sand, oil, rocks, plastic
300
Describe the nature of Solid particles- SEA
S- particles have little to no space
E- have little energy but vibrate in place
A- A lot of attraction between particles
300
List all 7 separation techniques
Hand separation
filtration
decanting
sifting/sieving
magnetic
evaporation
distillation
300
What is a mixed substance, provide 1 example
A mixed substance is made of 2 or more different substances that are physically combined although not chemically combined - Salt water, cereal, sand and water- coffee
300
Define rate of dissolution
Rate of dissolution is how quickly a solute can dissolve in a solvent
400
List 4 ways states of matter can change phase, name of process and what they change to and from
Solid - liquid = melting
liquid - solid = freezing
liquid - gas = evaporation
gas - liquid = condensation
400
How does distillation allow you to separate 2 solvents from a mixture
By evaporating the solvent with the lowest boiling point and then condensing it back into a liquid leaves you with both the solvents
400
What type of mixture is cereal
Heterogeneous
400
A mixture that contains an excess amount of solute to the solvent is called
A saturated mixture
500
Explain why gases can be compressed but solids can't
Gases can be compressed because there are large spaces between their particles, so the particles can be pushed closer together. Solids cannot be compressed because their particles are already packed very closely together, with very little space between them.
500
If you had a mixture of salt, sand and rocks in water explain how you would recover ALL materials. Needs to be in order and recovers everything
Hand separation - to get rocks out of mixture
Filtration - to allow the water to pass through and trap the sand
Distillation - to evaporate the water and recover it through the distillation condenser. this will also leave the salt in the original beaker
500
A - pure
B - mixture
C - mixture
D - mixture
500
What are the 3 ways to increase rate of dissolution
Heat, Agitation (stirring), Increasing surface area of solute