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As food moves through the human digestive system, which change occurs?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
Which situation describes a chemical reaction?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
Which substance cannot be decomposed into simpler substances?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
A weightlifter lifts a weight over his head with a force of 20 Newtons a distance of 2 meters. How much work did he do?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
How do we define a force?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
What evidence proves that no work is being done on an object?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
Which molecule in the equation for photosynthesis represents food energy made by plants?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
A rose plant has been turned on its side. Which of the following best describes what will happen to the plant?
Nail rusting after it is left out in the rain
40 J
an object remain stationary
carbon
The plant's roots will grow directly downward, and the stems will grow upward to the sun
All of the Above
both a chemical and a physical change
glucose
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