Semester 1 Final Review

Front

What is significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How many significant figures are in the number 100 cm?

Back

1 significant figure.

Front

What is the rule for determining significant figures in addition and subtraction?

Back

The result should be rounded to the least precise measurement, based on the decimal places.

Front

What is the result of 35.1 + 43.58 rounded to the correct number of significant figures?

Back

78.7.

Front

What is the significance of rounding in measurements?

Back

Rounding ensures that the precision of the result reflects the precision of the measurements used.

Front

What is the relationship between atomic radius and electronegativity?

Back

As atomic radius decreases, electronegativity generally increases, meaning atoms attract electrons more strongly.

Front

Define electronegativity.

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond.

Front

What is the trend of electronegativity in the periodic table?

Back

Electronegativity increases across a period from left to right and decreases down a group.

Front

How do you convert millimeters to meters?

Back

To convert millimeters to meters, divide the number of millimeters by 1000.

Front

Convert 44 millimeters to meters.

Back

.044 meters.