Pretest: Unit 3
Question 8 of 12
Which statement best describes what happens when thermal en...
Pretest: Unit 3
Question 8 of 12
Which statement best describes what happens when thermal energy of the
air around a fire la transferred to the surrounding alr?
A. The thermal energy is destroyed as it changes to chemical energy
B. The thermal energy changes to chemical energy,
C. The thermal energy is spread out by the surrounding air.
D. The thermal energy le destroyed over time,
Answers: 2
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What does a numerical subscript following an element in a chemical formula mean?
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Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
Answers: 2
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Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass
Answers: 1
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