Chemistry Review

Front

What is the order of increasing ionic radius for Cl⁻, Ar, and K⁺?

Back

K⁺, Ar, Cl⁻

Tags

NGSS.HS-PS1-1

Front

How many significant figures are in the number 0.456 seconds?

Back

3

Front

Which measurement is the least accurate: 9.81 grams, 9.8 grams, 9.810 grams, or 9.8100 grams?

Back

9.8 grams

Front

How many electrons can be found in a p orbital?

Back

6

Front

How many protons does an atom with an atomic number of 5 have?

Back

5

Front

Define ionic radius.

Back

The ionic radius is the measure of an atom's ion in a crystal lattice, typically measured in picometers.

Tags

NGSS.HS-PS1-3

Front

What is the significance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement and help convey the uncertainty in the value.

Front

Explain the difference between accuracy and precision in measurements.

Back

Accuracy refers to how close a measurement is to the true value, while precision refers to the consistency of repeated measurements.

Tags

NGSS.MS-PS3-4

Front

What is the maximum number of electrons that can occupy a single orbital?

Back

2 electrons.

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.