Ion Review

Presentation

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Chemistry

•

10th - 12th Grade

•

Practice Problem

•

Easy

•

NGSS

MS-PS2-3, MS-PS1-1

Standards-aligned

Brittany Corliss

Used 14+ times

FREE Resource

6 Slides • 11 Questions

Ion Review

What are ions?

An ion is an atom with charge
Ions do not have the same number of protons and electrons

How can you determine the charge of an ion?

Method 1: Equation
protons-electrons= charge
Ex: An atoms has 16 protons, 16 neutrons, and 18 electrons. What is the charge of the ion?
16 p - 18 e= -2
The charge would be negative 2

How can you determine the charge of an ion?

Method 2: Compare protons & electrons
More protons= positive ion, More electrons=negative ion
Ex: An atoms has 16 protons, 16 neutrons, and 18 electrons. What is the charge of the ion
There are 2 more electrons than protons so the ion is negative.
The charge would be negative 2 (-2)

Multiple Choice

Ions are atoms with...

charge due to a difference in protons and electrons

charge due to a difference in protons and neutrons

Multiple Choice

An ion with more protons than electrons will be...

neutral

positive

negative

Multiple Choice

An ion with more electrons than protons will be...

neutral

positive

negative

Multiple Choice

What is the charge of an ion that has 10 protons and 7 electrons

-3

+17

-17

Multiple Choice

What is the charge of an ion with 4 protons, 4 neutrons, and 6 electrons?

-8

-2

Multiple Choice

What is the charge of an ion with 12 protons, 12 neutrons, and 10 electrons?

-4

-2

What if you are asked to determine electrons?

Ex: An ion with 10 protons has a charge of -3. How many electrons does it have?
protons- electrons = charge; Solve for e
10 p - e = -3
e= 13
Or you can say because it is -3 it must have 3 more electrons than protons, therefore there 10 +3= 13 elecrtons

Multiple Choice

An ion with a charge of +1 has 11 protons. How many electrons are there?

Multiple Choice

An ion with a charge of -2 has 6 protons. How many electrons does it have?

Multiple Choice

An ion of Calcium has a charge of +2. How many electrons does it contain?

Hint: reference Periodic Table

Isotope Symbols

Remember isotope symbols follow the layout to the right

Multiple Choice

What is the correct isotope symbol for an ion with 8 protons, 9 neutrons, and 10 electrons?

Multiple Choice

What is the correct isotope symbol for an ion with 19 protons, 19 neutrons, and 18 electrons?

Ion Review

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