ATOMS, IONS, ISOTOPE

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons

Adding or subtracting neutrons (charge = 0, mass = 1) makes the element change into an...

• ion
• mixture
• isotope
• neutral atom

Tags

NGSS.HS-PS1-8

What is the charge on a lithium atom that looses 1 electron?

• +1
• 0
• -1
• -2

Tags

NGSS.MS-PS1-1

Is the element shown in this image an ion, isotope or normal atom?

• atom
• isotope
• cation (+ ion)
• anion (- ion)

Tags

NGSS.MS-PS1-1

Helium (He atomic number 2) has 2 protons, 2 neutrons, and 2 electrons) is the He element shown above an atom, an element, or an isotope?

• atom
• cation  (+ ion)
• isotope
• anion (-)

Tags

NGSS.MS-PS1-1

The atomic mass is equal to _.

• the number of protons only
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons, neutrons, and electrons.

How many protons does this isotope of titanium have? Hint titanium has an atomic number of 22.

• 48
• 22
• 26
• 70

Tags

NGSS.MS-PS1-1

What element is this?  What is the mass number of this atom?

• sodium, 23
• magnesium, 23
• magnesium, 12
• sodium, 11

Tags

NGSS.MS-PS1-1

Which subatomic particle is used to identify the atom, as it never changes?

• protons

• neutrons

• electrons

Tags

NGSS.MS-PS1-1

How many protons are found in this isotope? ⁷⁵₃₃As

• 75

• 42

• 33

• 108

Tags

NGSS.HS-PS1-1