Atom Basics

A proton has what charge?

• Positive

• Negative

• Neutral

A neutron has what charge?

• Positive

• Negative

• Neutral

How many protons does Potassium (K) have?

• 19

• 39

• 20

• 58

Which of the following is considered the building block of all matter?

• Atoms

• Molecules

• Compounds

• Elements

A particle that moves around the nucleus of an atom is an _______.

• Proton

• Neutron

• Electron

• Quark

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Tags

NGSS.MS-PS1-1

In terms of matter, the atom is almost entirely filled with _____

• orbiting electrons
• charged protons
• heavy neutrons
• empty space

Tags

NGSS.MS-PS1-1

Of the three subatomic particles, which is the lightest?

• protons

• neutrons

• electrons

• They are all equal.

An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?

• 15

• 31

• 16

• 47

Tags

NGSS.MS-PS1-1

Which of the following is the smallest?

• electron

• proton

• atom

• neutron