Unit 2 - Atoms & the Periodic Table

Kristen has an element that is shiny, brittle, solid and can conduct an electric current. In what category is this type of element?

• metals

• metalloids

• nonmetals

• noble gases

Electrons are found ___.

• in the nucleus

• in the electron cloud

• mixed throughout an atom

• in the neutrons of an atom

Which subatomic particle has the least mass?

• nucleus

• proton

• neutron

• electron

Which of these elements have similar chemical properties based on their location on the periodic table?

• O and Al

• Mg and K

• K and Na

• Na and Ne

What is the mass number of a carbon atom with 6 protons, 6 electrons, and 6 neutrons?

• 6

• 18

• 12

• 15

Which of these is true about isotopes?

• They have the same number of protons

• They have the same number of neutrons

• They have a different atomic number?

Which of these is true about isotopes?

• They have a different atomic mass

• They have the same number of neutrons

• They have a different number of electrons

Tags

NGSS.HS-PS1-8

A vertical column on the periodic table is also known as a ___.

• period

• group/family

• element

• property

The elements to the right of the zigzag line on the periodic table are called ___.

• nonmetals

• metals

• metalloids

• conductors

Using your periodic table, determine which of the following has a FULL outer energy level.

• Li

• O

• B

• Ne