Intro to the periodic table

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

Vertical (up and down) columns in the periodic table are called _________ of elements and have similar properties. 

• groups
• periods

The horizontal (left to right) rows on the periodic table are known as

• periods.
• atoms.
• groups or families.
• valence electrons.

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

What element is in period 3, group 14?

• He
• C
• N
• Si

Bromine (Br) is in period ___, and group ____.

• 3,  17
• 4,  17
• 17,  3
• 17,  4

How is atomic mass calculated?

• protons + electrons
• neutrons + electrons
• protons + neutrons
• mass - protons

What element is in period 5, group 11?

• Copper (Cu)
• Niobium (Nb)
• Silver (Ag)
• Gold (Au)

Which of the following has a positive charge?

• Proton
• Neutron
• Electron
• Ion