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Properties
Water
Changes
100
When you are talking about the properties of a material, what could that include?
size, weight, mass, density, colour, lustre
100
Does baking soda dissolve in water?
No
100
What is an example of a reversible change?
making salt crystals, mixing salt into water, paper clips in sand, etc.
200
What are the 3 states of matter?
solid, liquid, gas
200
Does citric acid dissolve in water?
Yes
200
What is an example of an irreversible change?
lighting a match, mixing milk and vinegar, mixing vinegar and baking soda, pop and mentos, a baked cake
300
Give an example of a mixture of two liquids
answers may vary
300
Does pepper dissolve in water?
No
300
How do we know a chemical reaction has occurred?
A new substance is formed.
400
If you wanted to separate sand and paper clips, what could you use?
Magnets
400
What is a characteristic that water has that most other liquids do not?
Surface Tension
400
If you mix sugar with water, can you reverse this reaction or not?
Yes you can because it is a physical reaction.
500
If you wanted to separate salt from sand, what is the name of the method to separate it?
Filtration
500
What is an example of Surface tension that can be messy if you take it too far?
blowing bubbles in your drink
500
What is a chemical reaction science experiment you could perform at home?
pop and mentos, baking soda and vinegar, milk and vinegar