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WorksheetsChemistry Midterm Part 1
Total questions: 16
Worksheet time: 20mins
If a solution of borax and water is mixed with liquid glue, the result was a new substance a bit like silly putty or playdough. The substance was soft, stretchy, and could bounce. When the borax and liquid glue were combined, what type of change occured?
physical
chemical
neither physical or chemical
hard, white, opaque, and flexible
are properties
are products
are reactants
If we mix borax and glue to get flubber. When making flubber, we refer to the borax and glue as:
pre-flubber
product
reactants
ingredients
Flammability (a paper catching on fire) is an example of what property?
Chemical property
Physical property
Which is an example of a physical property?
ability to react with hydrochloric acid
state of matter (gas, liquid, solid)
flammability
ability to react with oxygen
Which of the following is a chemical property?
flexibility
ability to rust
color
luster
If I am choosing a material to make a product, which of the following should I consider?
cost to produce
ability to recycle
waste produced during the product life cycle or manufacturing process
All of these are important considerations!
melting an ice cube
physical change
chemical change
making muffins
physical change
chemical change
chopping wood
physical change
chemical change
Which of the following is not a sign of a chemical reaction?
Color change
Formation of a solid (precipitate)
Temperature Change
Phase change (liquid becomes gas)
Demonstrating your understanding of the relationship between elements, molecules and compounds--what does the connected green triangle/red circle represent?
compound
molecule
element
nonsense
