Atoms & Subatomic Particles

Which of the following are found outside the nucleus of an atom?

• nucleus

• proton

• neutron

• electron

Use your periodic table to answer the following question.

Which atom has 14 protons?

• Carbon (C)

• Silicon (Si)

• Sulfur (S)

• Nitrogen (N)

Tags

NGSS.MS-PS1-1

Which of the following identifies the number AND location of protons in a Sulfur atom (S)?

• 32 protons, located in the nucleus
• 16 protons, located in the nucleus
• 32 protons, located outside the nucleus
• 16 protons, located outside the nucleus

Tags

NGSS.MS-PS1-1

An element has an atomic number of 12 and an atomic mass of 24 has how many neutrons are in this atom?

(Hint: Atomic mass = protons + neutrons)

• 6

• 12

• 24

• 48

Tags

NGSS.MS-PS1-1

An atom has 54 protons, 54 electrons, and 131 neutrons.

What is the atomic number of the atom?

• 54
• 77
• 131
• 185

Tags

NGSS.MS-PS1-1

What is the smallest form of matter (smallest part of an element)?

• atoms

• elements

• protons

• compounds

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.MS-PS1-1

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

Tags

NGSS.MS-PS1-1

Which element has 3 protons?

• H

• O

• Li

• C

Tags

NGSS.MS-PS1-1

Which part of an atom is POSITIVELY charged?

• protons
• neutrons
• electrons
• atoms