Chem Unit 1B Review

Front

What does low accuracy and high precision mean in measurements?

Back

Measurements are close to each other but not close to the true value.

Front

What does high accuracy and high precision mean in measurements?

Back

Measurements are close to each other and close to the true value.

Front

Define accuracy in the context of measurements.

Back

Accuracy means the measurement is close to the true value.

Front

How do you calculate the area of a rectangle with dimensions 1.23 m and 0.89 m, considering significant figures?

Back

1.1 m²

Front

How would you express the number 50,000 in scientific notation?

Back

5 x 10⁴

Front

What is the difference between accuracy and precision?

Back

Accuracy refers to how close a measurement is to the true value, while precision refers to how close measurements are to each other.

Front

What is significant figures?

Back

Significant figures are the digits in a number that contribute to its precision.

Front

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

Back

Count all non-zero digits, any zeros between them, and trailing zeros only if there is a decimal point.

Front

What is the scientific notation for 0.0045?

Back

4.5 x 10⁻³

Front

If a measurement is 3.00 m, how many significant figures does it have?

Back

It has three significant figures.