Test - Chemical Reactions Flashcards
1
Q
- How many nitrate ions are represented in 2Ca(NO3)2 in this compound
A
4 (NB 18)
2
Q
- Which of the following is an example of a physical change? Crushing, coloring, cutting, boiling, or melting
A
All of these (NB 18)
3
Q
- A bottle of hydrogen peroxide that eventually turns into a bottle of water and oxygen gas is an example of a…
A
Decomposition Reaction (NB 18)
4
Q
- Which of the following is NOT an example of a chemical change?
A
All are examples of chemical change (NB 18)
5
Q
- How many nitrogen atoms are represented in 2Ca(NO3)2
A
4 (NB 18)
6
Q
- Which reaction is not shown with problems #35 and #39? How do you know?
A
Combustion. I know this because there was no oxygen on the reactants side with water and carbon dioxide on the products (NB 18)
