States of matter
What are the 3 states of matter?
solid, liquid, and gas
Give one example of a pure substance
Teacher decides
Do we write in passive or active voice in science?
Passive
No, sand particles are not magnetic
Name one risk (injury) that could occur from a broken glass beaker
Cuts
name one example of a solid, a liquid, and a gas
Teacher judges this one
How many types of particles does a pure substance contain?
1
Is this sentence written in active or passive voice?
I did my homework yesterday.
Active
Which separation technique would you use to only remove iron from a mixture. Magnetism, filtration, or evaporation?
Magnetism
Name one hazard (something that could cause injury) in a science lab.
Bunsen burner, broken glass, spill, etc.
In evaporation a _____ turns into a _____
a liquid turns into a gas
Why is a cake considered a mixture? Use either the word particle or substance in your answer
It is made of 2 or more types of particle/substance
Is this sentence written in active or passive voice?
The magnet was placed near the mixture
Passive
Which separation technique allows small particles through and stops large particles from passing magnetism, filtration, or evaporation?
Filtration
Safety glasses
When water is heated up to high temperatures what change of state occurs?
Evaporation: Liquid water turns into steam gas.
Salt-water (saline) is a type of mixture called a....
Solution
Why is this sentence written in active voice?
We placed the beaker on the scales.
It starts with the person 'We'
Which separation technique only removes the liquid from a solution and leaves the solid solute? Magnetism, filtration, or evaporation?
Evaporation
A mixture of sand, iron, and salt has been spilled on the ground (Hazard). How could this cause injury (risk)?
It could cause a slip
If a water is evaporated into steam, where does the steam gas go?
In a solution a solute is dissolved into a solvent. In salt-water what is the solute and what is the solvent
Salt is the solute and water is the solvent
Change this sentence from active to passive voice
We placed the beaker on the scales.
The beaker was placed on the scales.
If a salt-water and sand mixture is poured through a filter what will be allowed through the filter and why?
Salt-water will be allowed through the filter because it is small liquid particles. Sand will not be allowed through because it has large solid particles.
Give 1 way that we can prevent mixture being spilled on the ground during experiments?
Be careful moving and handling containers. Don't leave near edge.