Chemistry Semester 1 Part 1

Front

All atoms are ____.

Back

neutral, with the number of protons equaling the number of electrons.

Front

Isotopes of the same element have different ____.

Back

mass numbers.

Front

What is the maximum number of d orbitals in a principal energy level?

Back

5.

Front

If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?

Back

counterclockwise.

Front

What is the electron configuration of potassium?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹.

Front

Define an atom.

Back

The smallest unit of matter that retains the properties of an element.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles in the nucleus of an atom that contribute to its mass.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number and properties.

Front

What is an electron configuration?

Back

The distribution of electrons in an atom's orbitals.