Basic Chemistry

Which subatomic part of an atom gives it a positive charge?

• Neutron

• Proton

• Electron

• Nucleus

An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?

• 0

• 7

• 6

• 13

Tags

NGSS.HS-PS1-1

The number of protons in the nucleus of an atom?

• Isotope

• Atomic mass

• Atomic number

• Element

What type of bond is formed when atoms share electrons?

• Covalent

• Ionic

• Hydrogen

• Polyatomic

Tags

NGSS.HS-PS1-1

How are ionic and covalent bonds alike?

• They both form organic molecules.

• They both fill outer electron shells.

• They both transfer electrons from one atom to another.

• They both transfer protons from one atom to another.

Tags

NGSS.HS-PS1-3

A substance with a pH of 8 is a

• acid

• base

• neutral

Acids have more ______ ions than bases

• OH^-

• H^-

• OH⁺

• H⁺

Which of the following would be considered most acidic?

• 1

• 3

• 7

• 13

The image shows the periodic grid for SODIUM. What is Sodium's atomic mass?

• 11

• 12

• 23

• Impossible to tell

An electron is

• positively charged

• neutral

• negatively charged

Tags

NGSS.MS-PS2-3