Chemtools

Front

Round 0.010229 to four significant figures.

Back

0.01023

Front

This variable in an experiment is the one being deliberately changed by the scientist.

Back

Independent variable

Front

Experimental Value = 86 cm; Accepted Value = 78 cm; What is the Percent Error?

Back

10 %

Front

The SI unit for time is the __?__.

Back

Second (s)

Front

What is the measurement 1042 Liters rounded to 2 significant figures?

Back

1.1 x 10^3 L

Front

Define significant figures.

Back

The digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

What is the formula for calculating percent error?

Back

Percent Error = |(Experimental Value - Accepted Value) / Accepted Value| x 100%

Front

What is an independent variable?

Back

The variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

The variable that is measured and affected in an experiment.

Front

What is the purpose of a control group in an experiment?

Back

To provide a baseline for comparison against the experimental group.