Chemical Safety
The Scientific Method
Properties of Matter
People
100
Draw any one of the safety symbols on the whiteboard and describe what it means.
[answers will vary]
100
What is the scientific word for an "educated guess"?
Hypothesis
100
Is color an example of a physical or chemical property? (e.g. the color of the Peace Tea can)
physical!
100
This person got 57 drops on their penny
Raylee
200
Chemicals labelled with these symbols are _________, and one example of this type of chemical is ________.
Corrosive
Toilet bowl cleaner, vinegar, any acid or base, ammonia
200
What is an "observation"?
Something you notice; something you see, hear, feel, smell, or taste.
200
Give 2 examples of chemical properties
Acid/base reactions, rusting, oxidation, flammability, sensitivity to light
200
This person remembered that a cut apple turning brown is called "oxidizing"
Kenny
300
The pool chemical (in the red & white container) that was added to the tin on the left is an example of an ____________.
Oxidizer
300
Think back to Gabriel, the kid who ate the cocoa powder. What was the "background research" he did that make him think he would enjoy the cocoa?
He had likely recognized the Hershey's label from a chocolate bar that he had previously eaten and enjoyed.
300
Who used the term "surface tension" to talk about how the water droplets behaved on the penny?
Maysen
400
What is the difference between symbols outlined in an octagon shape versus the upside down triangle shape?
Triangle - container is dangerous
Octagon - chemical inside is dangerous
400
Name a liquid with high viscosity
Honey, lava, ketchup
400
How did we find the average number of drops?
By adding up the total number of drops and then dividing by 3
500
List BOTH symbols you would find on a can of hairspray AND say whether each symbol would be outline with an octagon or a triangle.
Explosive - triangle
Flammable - octagon
500
What is does it mean if a material is malleable?
It can be hammered into a sheet without breaking
500
This person got a quote up on the board yesterday: "If I had a penny for every time I said 'clean your pennies' I'd be poor!"
Akayla