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Ch1
The main branches of natural science are: |
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| life, physical, and earth science. |
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Ch1
What do scientists who do pure science do? |
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| They do experiments to find out about the world. |
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Ch1
What is a scientific law? |
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| it is a description of a natural event. |
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Ch1
Scientific theories can be changed or replaced when |
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| new discoveries are made. |
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Ch1
Scientists test a hypothesis by |
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Ch1
Maria is 123 centimeters tall. her height in meters is |
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Which SI prefix means one one-hundredth (1/100)? |
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Ch1
A loaf of bread weighs 1362g. the weight in kilograms is |
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Ch1
The speed of light is approximately 3 × 10(8power)m/s. How would this be written in conventional notation? |
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Ch1
You asked to find the volume of a cube that is 2.5 cm high, 2.65 cm wide, and 3.456cm long. How many significant figures should you show in your answer? |
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Ch1
A measurement that is accurate is one that |
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| is close to the true values. |
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Ch1
A mathematical representation of an object or event is a |
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Ch1
Any factor in an experiment that can change is referred to as a |
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Ch1
Combinations of the SI base units, which are used to measure quantities such as volume, speed, and pressure, are called |
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Ch1
In the SI system, what prefix means one millionth? |
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Ch1
The number .0009234 would be written in scientific notation as |
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Ch1
The number of 56,780,000,000 would be written in scientific notation as |
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Ch1
The number 4.065 has how many significant figures? |
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Ch1
"That measurement is very precise, but it is still not accurate." Explain how this statement might be true. |
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| A measured quantity is only as accurate as the tool uses to make the measurement. |
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Ch2
Matter is defined as anything that |
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| has mass and takes up space. |
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Ch2
The smallest unit of a substance that behaves lie the substance is |
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Ch2
The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid? |
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Ch2
What is an example of gas- liquid mixture. |
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Ch2
Which state of matter will hold its shape without a container? |
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Ch2
The kinetic energy states that the higher the temperature, the faster the |
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| particles that make up a substance move. |
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Ch2
The ability to change or move matter is referred to as |
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Ch2
Evaporation refers to the change of state from a |
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Ch2
During a chemical or physical change, energy may be |
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| converted to another form |
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