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Copy of Skill Check #1.3 (Unit 1 Investigation 1 Experience 3) (7/30/2025)
By Didi Maloney
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Last updated 7 months ago
5 questions
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Question 1
1.
Which of the following reactions correctly shows the combustion of methane?
CH
4
+ 2CO
2
→ 2O
2
+ 2H
2
0
CH
4
+ CO
2
→ O
2
+ H
2
0
2CH
4
+ 2O
2
→ 2CO
2
+ 2H
2
0
CH
4
+ 2O
2
→ CO
2
+ 2H
2
0
Question 2
2.
What is the complete balanced equation for the following reaction?
Na + Cl
2
→ NaCl
Na + Cl
2
→ NaCl
2Na + Cl
2
→ 2NaCl
Na + Cl → NaCl
2Na + Cl
2
→ NaCl
2
Question 3
3.
The subatomic particle with a positive charge is the
electron
ion
neutron
proton
Question 4
4.
The table shows the number of each of the three subatomic particles for four atoms.
Which atoms represent the same element?
1 and 2
2, 3, and 4
1 and 3
2 and 3
Question 5
5.
Which of the following statements regarding nuclear reactions is true?
Breaking an atom apart into two smaller atoms is called fusion.
During nuclear reactions, energy is not conserved but mass is.
During nuclear reactions, mass is not conserved but energy is.
Combining two smaller atoms into a larger atom is called fission.