ATOMS, IONS, AND ISOTOPES

What charge does an atom have when it GAINS electrons?

• Positive

• Negative

• Neutral

What is a representation of an ion?

• Li

• O^-2

Tags

NGSS.MS-PS1-1

What two particles determine the mass number?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

Tags

NGSS.HS-PS1-8

What does it change in an ion?

• The number of electrons

• The number of protons

• The number of neutrons

What is the representation of an isotope?

• N^-3

• Al⁺³

• Si

• P-33

Tags

NGSS.HS-PS1-8

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

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.