Atoms to Mixtures Test Review 2025

Was is the atomic number of an element with 6 protons, 6 electrons, and 6 neutrons?

• 6

• 12

• 18

• 0

Tags

NGSS.MS-PS1-1

Which of the following would change Carbon to a different element?

• Add/remove a proton

• Add/remove a neutron

• Add/remove an electron

Which element is in period 3, group 15?

• Phosphorus

• Antimony

• Francium

• Cobalt

Which element has 4 rings and 7 valence electrons?

• Bromine

• Chlorine

• Manganese

• Potassium

Which element has 3 more protons than Gallium (Ga)?

• Selenium

• Nihonium

• Krypton

• Helium

An element in group 16 has how many valence electrons?

• 1

• 6

• 16

• 7

Elements in the same period have the same number of:

• Electron rings/orbitals/energy levels

• Valence electrons

Elements in the same group have the same number of:

• Electron rings/orbitals/energy levels

• Valence electrons

Name of family of Group 1 elements:

• Alkali Metals

• Alkali Earth Metals

• Transition Metals

• Halogens

Name of family of Group 2 elements:

• Alkali Metals

• Alkali Earth Metals

• Transition Metals

• Halogens