Periodic Table Test, Part 2!

The mass of an electron is so small that we don’t even count them when considering an atom’s overall mass.

• True

• False

The nucleus is the center of the atom.

• True

• False

To solve for the number of neutrons, you should add the mass number and the atomic number.

• True

• False

Synthetic elements are elements that are naturally occurring in nature. 

• True

• False

The electron cloud is the area around the nucleus of the atom where protons are most likely found.

• True

• False

The nucleus is positively charged due to the protons and neutrons found there.

• True

• False

What particles make up the nucleus and the mass of an atom?

• neutrons

• protons and electrons

• protons

• protons and neutrons

Tags

NGSS.MS-PS1-1

Horizontal rows of the periodic table are called

• periods

• groups

• columns

• families

Atoms of the same element with different numbers of neutrons are called what?

• Isotopes

• elements

• neurotropes

• asotropes

Vertical columns of the periodic table are called

• periods

• rows

• groups

• lines