Atoms/Elements

Use your periodic table to answer the following question.
Which of the following atoms has 14 electrons?

• Carbon (C)
• Silicon (Si)
• Sulfur (S)
• Argon (Ar)

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

An element with an atomic number of 37 and an atomic mass of 85 has how many neutrons in each atom?

• 37
• 48
• 85
• 122

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

How many protons and neutrons are there in an atom of Gallium (Ga)?

• 31 protons and 31 neutrons
• 31 protons and 70 neutrons
• 31 protons and 39 neutrons
• 31 protons and 101 neutrons

The protons in an atom’s nucleus have what kind of charge?

• positive
• negative
• neutral
• no charge

What kind of charge do neutrons have?

• positive 
• negative
• neutral
• -3

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

• atoms
• elements
• protons
• compounds

Tags

NGSS.5-PS1-1

All atoms of an element have the same number of _____________.

• neutrons
• electrons
• protons
• atomic mass

Tags

NGSS.MS-PS1-1

The periodic table is arranged in different ways. One way is by ______________.

• atomic mass
• atomic number
• neutrons
• whether they share neutrons