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WorksheetsExplaining Chem Rxns Review
Total questions: 13
Worksheet time: 12mins
A balanced equation has...
different numbers of each type of atoms before and after the reaction
same numbers of each type of atoms before and after the reaction
only aqueous substances
matter that is NOT conserved
The phenomenon that matter cannot be created or destroyed explains
conservation of energy
conservation of recycling
conservation of matter
deactivation of matter
Select the group with a +1 charge.
Select the group with a -3 charge.
Select the group with a -1 charge.
What would the final answer for this crossover (criss-cross) method to determine the formula?
CaN
Ca3N2
Ca2N3
CaN2
What is the product for the reaction:
Al + O2 --> ____
AlO
Al2O
Al3O2
Al2O3
How is the law of conservation of matter explained?
Because atoms can only (a) , the initial and final masses
of the substances are (b)
What type of bond would Li and F form?
ionic
metallic
covalent
polar covalent
What type of bond would N and O form?
ionic
metallic
covalent
Balance the equation to apply conservation of matter:
(a) Na + (b) N2 --> (c) Na3N
The diagram is incorrect. Which fact would help FIX this diagram accurately?
nitrogen missing an octet
hydrogen missing an octet
nitrogen can only make 3 bonds
hydrogen needs 2 bonds
N2 + Br2 --> ____
When predicting the number of bonds bromine can make with carbon you would need to consider that bromine has (a) valence electrons and needs (b) more valence electron(s) for an octet, which means that bromine likes to make (c) covalent bond to complete the outer ring of electrons.
