Chem ch
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10 Terms
What is an atom?
The smallest unit of an element.
What is a molecule?
Two or more atoms bonded together.
What is a compound?
A molecule made up of two or more different elements chemically bonded together.
How is the number 1,000 expressed in scientific notation?
1 x 10^3.
How is the number 0.001 expressed in scientific notation?
1 x 10^{-3}.
What is the conversion factor between kilograms and grams?
1 kg = 1000 g.
What is the conversion factor between meters and centimeters?
1 m = 100 cm.
What are significant figures?
The digits in a number that contribute to its precision.
What is dimensional analysis?
A problem-solving technique that uses conversion factors to track units through calculations.
Why is it important to determine significant figures in measurements?
To express the precision of the measurements correctly.