Chem 2024 Semester Test

Front

What should you do after working with chemicals and lab equipment?

Back

Wash your hands with soap and water.

Front

What atom has the electron configuration 1s² 2s² 2p⁶ 3s²?

Back

Magnesium.

Front

What type of bonding is characterized by the transfer of electrons?

Back

Ionic bonding.

Front

Convert 542000 into proper scientific notation.

Back

5.42 x 10⁵.

Front

What does the Atomic Mass of an element indicate?

Back

How many sub-atomic particles are in the nucleus.

Front

Define Ionic Bonding.

Back

A type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

Front

What is the significance of the electron configuration of an atom?

Back

It determines the chemical properties and reactivity of the element.

Front

What is the difference between atomic number and atomic mass?

Back

Atomic number is the number of protons in an atom, while atomic mass is the weighted average mass of an atom's isotopes.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is a covalent bond?

Back

A type of chemical bond where two atoms share one or more pairs of electrons.