Test- Chemical Reactions Flashcards
1
Q
- Is CL2+2 + 2NaI -> 2NACL+ I2 a balanced eqation
A
Yes
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2
Q
- Nitrate ions are represented in 2Ca(NO3)2 in this compound
A
4
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3
Q
- How many nitrogen atoms are represented in 2CA(NO3)2 in this compound.
A
Four
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4
Q
- Which of the following is a balanced chemical equation
A
H2O2 -> H2O +02 or 2FE203 plus 3C -> 4FE +3 CO2
3C -> 4FE +3 CO2
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5
Q
- How many atoms of oxygen are represented in 2CA (NO3)2
A
12
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6
Q
- In a chemical equation numbers often appear in front of a chemical formula these numbers tells you the
A
Number of molecules or atoms each substance in the reaction
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7
Q
- Which of the following is an example of chemical change
A
And Apple ripening ,a temperature change in test tube ,a piece of wood burning and ,iron rusting
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