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chemical change
chemical reaction
chemical properties
chemical technology
other
100
Burning a piece of paper is an example a ______________.
What is chemical change.
100
burning a log in the fire is an example of ....
What is combustion
100
C + O2 = CO2 what substance is this....
What is carbon dioxide
100
Nylon is an example of a _________.
What is polymer
100
matter can not be created nor ___________.
What is destroyed.
200
what substance is being made when iron oxide is released into the air.
What is rust
200
H2O + H20 = 2H2O What kind of chemical reaction is being shown ?
What is combination reaction
200
what is Alexander Fleming known for ....
what is finding penicillin
200
sulfur was added to ___________ so that it could be used all year long .
What is rubber .
200
what is the first step in using cleaning products ?
What is read the directions
300
list three types of evidence of chemical change .
What is 1. color change 2. change in heat 3 change in state
300
FeS + 2HCL----- FeCl2 + H2S what type of reaction is occurring ?
What is replacement reaction.
300
If the universal indicator paper turned red then you known that you are dealing with an ___________.
What is acid.
300
what color do you think indicator paper would turn if it were dipped in shampoo ?
What is blue
300
what is one way chemicals have made life safer for many people ?
What is chemical kill germs
400
These are rearranged in a chemical change.
What are atoms?
400
what are the 2 parts of a chemical reaction ?
What is reactant and product
400
Strong acids turn indicator paper this color. 
What is red?
400
what do antibiotics do ?
What is kill bacteria
400
In what year was they word " vitamin " coined ?
What is 1911
500
Name a chemical change that takes place at least 3 times a day ?
What is eating food breakfast / snack lunch dinner
500
what are the 3 types of chemical reactions ?
What is 1. decomposition 2. combination 3. replacement
500
If 77 grams of chlorine is combined with sodium to give 127 grams of sodium chlorine. How much sodium was used ?
What is 50 grams 127- 77 = 50
500
what are 3 common materials that were developed by scientists ?
What is 1. nylon 2. plastics 3. cement
500
Silk was 1st made into fabric in ancient ________.
What is china