Atoms Review Quiz

Based on the number of subatomic particles, which of the following atoms will have a positive charge?

• Protons = 6; neutrons = 6; electrons = 6

• Protons = 7; neutrons = 6; electrons = 6

• Protons = 9; neutrons = 10; electrons = 9

• Protons = 10; neutrons = 11; electrons = 11

A table with information about four elements is provided

• Sodium

• Calcium

• Titanium

• Magnesium

The reactivity of an element is most greatly influenced by which of the following?

• Number of valence electrons

• Melting point

• Number of protons

• Atomic mass

Which of the following correctly describes a proton?

• Location: nucleus; contribution to mass: usually about half; charge: positive

• Location: nucleus; contribution to mass: virtually none; charge: positive

• Location: outside the nucleus; contribution to mass: usually about half; charge: positive

• Location: nucleus; contribution to mass: usually about half; charge: none

An atom of an element has 12 protons. How many electrons does the atom have if it has a charge of positive 2 (+2)?

• 2

• 10

• 14

• 24

If Oxygen (O) has 8 electrons in the atoms electron cloud, then how many protons does it have in the nucleus?

• 3

• 5

• 8

• 12

Using your periodic table, what element is in the third period and group 2?

• Fe - Iron

• Mg - Magnesium

• Al - Aluminum

• Ca = Calcium

Which two groups on the Periodic Table are the MOST reactive?

• Group 1 and Group 7 (17)

• Group 22 and Group 26

• Group 18

Elements in the same __________ will have similar chemical properties and the same number of valence electrons.

• Group

• Period

How many electrons does potassium K contain? (click to see image)

• 19
• 39
• 20
• 40