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Counting Atoms Bell Ringer Duvall
By Alicia Duvall
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Last updated over 1 year ago
6 questions
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Question 1
1.
How many atoms of each element are in the molecule below?
(NH
4
)2SO
4
N-4, H-4, S-8, O-8
N-6, H-4, S-6,O-6
N-1, H-4, S-2, O-8
Question 2
2.
How many atoms of oxygen are on the reactant side of chemical reaction below?
CO + H2O → CO2 + H2
2
3
4
6
Question 3
3.
How many atoms of hydrogen are on the product side of the chemical reaction below?
2H
2
O + O
2
→ 2H
2
O
2
6
4
8
2
Question 4
4.
What is the atomic mass of the element W?
22.99
106.42
281
183.84
Question 5
5.
How many protons does Ra?
24
70
65
88
Question 6
6.
Elements and compounds are similar in some ways and different in others.
The chemical formula for carbon is Ca
An elements symbol must start with a capital letter
A compound such as sodium can have several chemical formulas
Elements are represented by a single chemical formula