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Chapter 6: Lesson 1 Flashcards | StudBud
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Chapter 6: Lesson 1
Chapter 6: Lesson 1
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Answers
1
True or False: this chemical equation is balanced.
False
True
2
True or False? This chemical equation is balanced.
False
True
3
What coefficient is needed to balance this chemical equation?
2
4
1
3
4
____________ states that matter cannot be created or destroyed.
Archimedes principle
The law of the conservation of energy
Newton's 3rd law
The law of conservation of mass
5
Physical or Chemical Change? Iron nail rusting.
Chemical
Physical
6
True or False: You can combine different elements to create gold.
True
False
7
What would occur if we removed all oxygen from a campfire?
The fire would burn hotter.
Nothing would change.
The fire would burn slower and longer.
The fire would go out.
8
True or False: The reactant is the substance produced by a chemical reaction.
False
True
9
What is a coefficient in chemistry?
The same thing as a subscript
A number in front of a formula in a chemical equation
The chemical symbol in a chemical equation
6.022 x 1023
10
The coefficients of the balanced chemical equation are:
4 3 2
2 3 1
balanced
4 3 1
11
The coefficients of the balanced chemical equation are:
3 3 2
balanced
2 2 2
2 2 1
12
What is the subscript of Carbon?
1
3
0
6
13
You can change subscripts when balancing an equation.
True
False
14
Physical or Chemical Change? Cutting your hair.
Chemical
Physical
15
What is needed to balance this equation?
Add a 2 subscript to the O in CaO
Remove the 2 coefficient from Ca
Remove the 2 subscript from the reactant O
Add a 2 coefficient to CaO
