Honors Chemistry Unit 1 Review

Front

What are 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 a decimal number.

Front

How do you round a number to a specific number of significant figures?

Back

To round a number to a specific number of significant figures, identify the digit at the desired position, look at the digit to its right, and round up if it's 5 or greater, or leave it if it's less than 5.

Front

What is the significance of the unit 'mm'?

Back

The unit 'mm' (millimeter) is used to measure length, where 1 mm is equal to 0.001 meters.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

Convert 9.87 x 10^1 to decimal form.

Back

98.7

Front

What does the unit 'mL' measure?

Back

The unit 'mL' (milliliter) is used to measure volume, where 1 mL is equal to 0.001 liters.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms or grams, while weight is the force exerted by gravity on that mass, measured in newtons.

Front

What is the formula for density?

Back

Density is defined as mass divided by volume (Density = Mass/Volume).

Front

How do you convert between units of measurement?

Back

To convert between units, use conversion factors that relate the two units, multiplying by the appropriate factor to cancel out the original unit.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10, simplifying the representation of very large or very small numbers.