Lab safety
Why is eye protection worn in the lab
Anytime chemicals, heat, are used
Solid liquid gas
what are the 3 main states of matter
what are properties of chemical changes
Are measurable and observable with your senses
What is a phase change
Switching from one state of matter to another
what determines whether or not something is a solid liquid or gas
The arrangement and energy of particles
After finishing an experiment what should you do
Dispose the waste directed by the teacher
Solid liquid gas plasma BEC
what are the 5 states of matter
What are the properties of physical changes
they are measurable and observable like density, freezing, melting point, and boiling point
what does it mean when a substance turns from a solid to a liquid
melting
you are testing how temp affects the rate at which sugar dissolves in water. you us 3 cups pf water at different temps cold room temp and hot. you put the same amount of sugar and stir it the same amount of time what are 2 control variables
the stirring time and the cups temperature
Long hair in the lab must be...
Tied back so its not in the way
What does BEC stand for
Bose Einstein Condensate
What is the boiling point for water
100 degrees
what is it when a gas turns to a liquid
condensation
list the states of matter from coldest to hottest
BEC, solid, liquid, gas, plasma
Horseplay in the lab is what
Against the rules
How do the 3 states of matter move and how are they arranged
Solid: The particles move slowly are compact have a definite volume and don't take the shape of the container
Liquid: Moves at a moderate speed doesn't have a definite shape, has a definite volume and take the shape of the container and is very compact
Gas: gas particles move and a fast pace doesn't have a definite volume that has a definite shape only in a closed container is spread out and takes the shape of a container.
what is the freezing point of wate
0 degrees
what is deposition
when a substance turns from gas to solid
Cockroaches are exposed to a pesticide. After 3 hours, 95% of the insects were dead.What are the dependent and the independent variable in this scenario.
Dependent is the amount killed
Independent was the pesticide
What do you do when finishing a lab
Wash your hands with soap and water thoroughly
What forces affect the movement of liquid particles
Cohesion and Adhesion
if you turn eggs flour and milk into pancakes what kind of change is that
chemical change
what is ionization
gas to plasma
what is the formula to find density
mass divided by volume