IB Chemistry Final Review Part 1

Front

What type of error occurs when a clock runs too fast or slow?

Back

Systematic errors

Front

What does it mean if a set of measurements is only precise but not accurate?

Back

The measurements are consistent with each other but not close to the true value.

Front

What is the measure of the average kinetic energy of the particles of a substance called?

Back

Temperature

Front

How many significant figures are in the answer to 7.62 x 6.98 x 3.2645?

Back

3

Front

What are the approximate percentage abundances of the isotopes of lithium?

Back

Lithium-6 = 10%, Lithium-7 = 90%.

Front

Define systematic error.

Back

An error that consistently occurs in the same direction, affecting accuracy.

Front

Define random error.

Back

An error that occurs unpredictably and affects precision.

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 consistent measurements are with each other.

Front

What is the formula for calculating significant figures in multiplication?

Back

The result should have the same number of significant figures as the measurement with the least significant figures.

Front

What is the definition of temperature in terms of kinetic energy?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.