Ions and Isotopes

What charge does an atom have if it LOSES an electron? 

• Positive (+)
• Negative (-)

What charge does an atom have if it GAINS an electrons?

• Positive (+)
• Negative (-)

If you have 10 protons and 9 neutrons, what would the mass number be?

• 19
• 9
• 10
• 1

What is the definition of isotope?

• atoms of an element with different numbers of neutrons.
• materials break down over time at a very consistent rate

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

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.

A neutral atom of Boron has 5 p+, 6 n, and 5 e-. The Boron atom pictured is a....

• Positive ion
• Negative ion
• Isotope
• Neutral atom

A neutral atom of Lithium has 3 p+, 4 n, and 3 e-. The Lithium atom pictured is a....

• Positive ion
• Negative ion
• Isotope
• Neutral atom

A neutral atom of Boron has 5 p+, 6 n, and 5 e-. The Boron atom pictured is a....

• Positive ion
• Negative ion
• Isotope
• Neutral atom

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5