Atoms practice test

Which of the following correctly displays the atoms in a liquid?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which letter represents an electron?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Which arrangement below describes the correct charge for subatomic particles?

• neutrons - no charge

  electrons - negative

• protons - positive

  electrons - positive

• electrons and neutrons have neutral charges

• protons and electrons have neutral charges

Fluorine has an atomic number of 9. Which statement about it's subatomic particles is true?

• 3 protons and neutrons

• 9 protons, 3 neutrons

• 9 protons, 9 electrons

• 3 protons, 9 electrons

Tags

NGSS.MS-PS1-1

If most of the mass of an atom is in the nucleus, what is the mass number of an element with 26 protons and 30 neutrons?

• 56

• 4

• 26

• 30

Neutral atoms have the same number of _____ and _____.

• ions and isotopes

• electrons and protons

• protons and neutrons

• ions and electrons

What type of elements are in the middle of the periodic table in groups 3-12?

• metals/transition metals

• metalloids

• non-metals

• all of the listed in random order

What is the atomic number of carbon?

• 6

• 15.9

• 16

• 2

Tags

NGSS.MS-PS1-1

Helium and Neon are non-reactive because they have _____ valence electrons.

• 2

• 18

• 8

• 10

What do elements in period 2 all have in common?

• All gases

• Same number of neutrons

• Same number of valence electrons

• the number of electron energy levels

Tags

NGSS.MS-PS1-1