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Mr.D's test
properties and changes
Question | Answer |
---|---|
all of the following involve chemical changes EXCEPT | melting of ice |
witch of the following is NOT evidence of a chemical change | change of phase |
witch of the following is an example of an chemical change | iron rusting |
what is the difference between a chemical and a physical change | chemical changes makes something new and physical changes may look different but stay the same |
what is the difference between a chemical property and a physical property | chemical property is when it is telling you if it can go through a chemical change a physical property is its appearance |
what is the difference between a chemical property and a chemical change | a chemical property is when it is telling you if it can go through a chemical change a chemical change makes something new |
what is the difference between a physical property and a physical change | physical changes may look different but stay the same and physical propertys is its appearance |
why is boiling water not a chemical change | it is still water but as a vapor |
a reaction starts with one chemical that results in the formation of two new chemicals, what type of reaction is this | decomposition |
what type of reaction will combine two simple chemicals into one new more complex chemical | synthesis |
a chemical reaction that will replace one element of a compound with one other one is what type | single replacement |
what reaction type will two molecules swap elements with each other | double replacement |
if a chemical reaction such as photosynthesis begins with 6 atoms of carbon how many atoms of carbon should be in the products | 6 |
a chemical reaction produces two new substances and each |