Chemistry Semester 1 Part 1

All atoms are ____.

• positively charged, with the number of protons exceeding the number of electrons

• negatively charged, with the number of electrons exceeding the number of protons

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

• neutral, with the number of protons equaling the number of neutrons

The nucleus of an atom is ____.

• composed of protons and neutrons

• has more protons than neutrons

• contains protons and electrons

• consists of electron and neutrons

Tags

NGSS.MS-PS1-1

Isotopes of the same element have different ____.

• positions on the periodic table

• chemical behavior

• atomic numbers

• mass numbers

The principal quantum number indicates what property of an electron?

• position

• speed

• energy level

• electron cloud shape

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

• 1

• 2

• 3

• 5

What is the maximum number of orbitals in the p sublevel?

• 2

• 3

• 4

• 5

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

• zero

• clockwise

• counterclockwise

• both clockwise and counterclockwise

What types of atomic orbitals are in the third principal energy level?

• s and p only

• p and d only

• s, p, and d only

• s, p, d, and f

What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?

• 2d

• 3d

• 3f

• 4s

Tags

NGSS.HS-PS1-1

If three electrons are available to fill three empty 2p atomic orbitals, how will the electrons be distributed in the three orbitals?

• one electron in each orbital

• two electrons in one orbital, one in another, none in the third

• three in one orbital, none in the other two

• Three electrons cannot fill three empty 2p atomic orbitals.

Tags

NGSS.HS-PS1-1