TEST - 3rd 6wks Chemistry

Front

What is atomic radius?

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons. It generally increases down a group in the periodic table.

Front

Which element has the largest atomic radius in Group 18?

Back

Oganesson (Og) has the largest atomic radius in Group 18.

Front

Why does atomic radius increase as you move down a group in the periodic table?

Back

Atomic radius increases because you add more and more shells (energy levels) of electrons.

Front

What is the percentage composition of carbon in carbon monoxide (CO)?

Back

The percentage of carbon in carbon monoxide (CO) is 43%.

Front

Which element has a greater electronegativity: Nitrogen (N) or Carbon (C)?

Back

Nitrogen (N) has a greater electronegativity than Carbon (C).

Front

What is the correct order of waves in the Electromagnetic Spectrum?

Back

The correct order is: Radio, Micro, Infrared, Visible, UV, X-ray, Gamma.

Front

Define electronegativity.

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What is the significance of the Periodic Table in chemistry?

Back

The Periodic Table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the difference between atomic mass and atomic weight?

Back

Atomic mass is the mass of a single atom, while atomic weight is the average mass of an element's isotopes, weighted by their natural abundance.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the atomic mass and stability of the nucleus but do not affect the charge of the atom.