Ion Practice

Ion Practice

Use this lesson to review for the quiz on Friday.

Multiple Choice

Protons are always equal to what number on the periodic table

• mass number

• atomic number

• Oxidation numbers

• Electrons + protons

Multiple Choice

The charge of a neutral atom is ______

• -1 anion

• +1 cation

• 0 charge

• -1 Cation

Multiple Choice

In a neutral atom ___________ = ____________

• neutral = protons

• Protons = electrons

• electrons = neutrons

Neutral atoms Review

• All atoms are in general are Neutral which means ___Protons = _electrons.

  
  

  To calculate the charge of an atom you use the formula: Protons - electrons = charge (because electrons are always negative)

• The overall charge of a neutral atom is 0 (zero) Positive charges = negative charges.

Multiple Choice

A neutral atom of sodium (Na) has how many protons and electrons. Use Periodic table prevous slide.

• 12 protons, 11 electrons

• 11 protons, 11 electrons

• 23 electrons, 11 protons

Multiple Choice

The protons are always equal to what number on the periodic table?

• Mass number

• Atomic number

• Oxidation numbers

• symbol

Multiple Choice

A neutral atom has 13 electrons what element is this? why?

• Magnesium because the protons are 12

• Aluminum becuase the protons are 13

• Carbon because the mass is almost 13

Multiple Choice

A neutral atom of helium (He) has how many protons and electrons? Use

• 3 protons, 3 electrons

• 2 protons, 2 electrons

• 4 protons, 4 electrons

Multiple Choice

A neutral atom of Lithium (Li) has how many protons and electrons?

• 4 proton, 4 electrons

• 2 protons, 2 electrons

• 3 protons, 3 electrons

• 3 protons , 7 electrons

Ion Review

• Sometimes atoms form Ions which means they either have more Protons or electrons and are not neutral anymore.

• They can only gain or lose electrons never protons.

2 Types of ions Review

• An anion is a ion that has more electrons than Protons which gives it an overall negative charge. (Way to remember aNion has an N for negative in it)

  
  

• A cation is an ion that has more protons  than electrons which gives it a overall positive charge. “They are Pawsitive like a cat”

• You calculate the charge of an ion: Protons - electrons = charge.

Multiple Choice

What type of ion is it if it has a -1 charge?

• anion

• cation

• not an ion because it's neutral (0 charge)

Multiple Choice

What type of ion is it if it has a +1 charge?

• anion

• cation

• not an ion because it's neutral (0 charge)

Multiple Choice

What type of ion is it if it has a +3 charge?

• anion

• cation

• not an ion because it's neutral (0 charge)

Multiple Choice

What type of ion is it if it has a -2 charge?

• anion

• cation

• not an ion because it's neutral (0 charge)

Multiple Choice

What type of ion is it if it has a 0 charge?

• anion

• cation

• not an ion because it's neutral

Calculating charges review

• Protons - electrons = charge

• Electrons are negative that why in the formula you subtract electrons.

• Remember you can use a calculator either on google, computer, phone etc..

Multiple Choice

What is the charge of an atom with 9 protons and 10 electons?

• +1

• -1

• +19

Multiple Choice

What is the charge of an atom with 12 protons and 10 electons?

• +2

• -2

• 22

Multiple Choice

What is the charge of an atom with 34 protons and 37 electons?

• + 3

• -3

• 0

Multiple Choice

What is the charge of an atom with 54 protons and 50 electons?

• + 4

• - 4

• 104

Putting it all together- use the periodic table to support you with the last questions.

• Ions are charge particle that are either negative (anions) or positive (cations)

• You can calculate a charge using the formula Protons - electrons = charge

• Protons are = to the atomic # on the periodic table

• In a Neutral atom Protons = electrons.

Multiple Choice

A neutral atom has 15 electrons - what is this elements name?

• Aluminum

• Managanese

• Boron

• Phosphorus

Multiple Choice

A neutral atom has 15 electrons - How many protons does this element have?

• 12

• 15

• 13

• 14

Multiple Choice

An ion has 8 protons and 10 electrons, what is it's charge and the name of the element?

• +2, Flourine

• -2, Flourine

• +2, Oxygen

• -2 Oxygen

Multiple Choice

An ion has 9 protons and 10 electrons, what is it's charge and what type of ion is it?

• +1, Flourine

• -1, Flourine

• +1, Cation

• -1, Anion