Sig Figs, Matter, and Property Changes Test

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 the decimal portion.

Front

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

Back

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

Front

What is the significance of significant figures in calculations?

Back

Significant figures indicate the precision of measurements and calculations, ensuring that results are not overstated or understated.

Front

Back

0.048

Front

How many significant figures are in the number 75,000 m?

Back

2

Front

Back

900

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, often accompanied by energy changes.

Front

Give an example of a chemical change.

Back

Soured milk is an example of a chemical change.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Give an example of a physical change.

Back

Ice melting is an example of a physical change.