protons, neutrons and electrons

Presentation

•

Science

•

9th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-1, HS-PS1-1, HS-PS1-2

Standards-aligned

Famin Naseer

Used 38+ times

FREE Resource

7 Slides • 10 Questions

protons, neutrons and electrons

OBJECTIVES

Identify the number of protons, neutrons and electrons
describe ions
Calculate the average atomic mass of isotopes

three subatomic particles - Protons, neutrons and electrons

Calculate the number of protons, neutrons and electrons

Multiple Choice

How many electrons does a Copper atom have?

Multiple Choice

How many neutrons are in a Gold atom?

196

118

275

Multiple Choice

How many protons are in Beryllium?

Multiple Choice

Where are electrons found in an atom?

in the nuclues

electrons don't exist o_O

orbiting the nucleus

Only Josie knows where they are.

ions

Ions are charged particles

Multiple Choice

If an element has 3 valence electrons, what charge will likely form on its ion ? Hint: It will lose those electrons. What happens to the charge when it loses 3 electrons?

-3

-5

Multiple Choice

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

Br^-1

Br⁺¹

Br⁺⁷

Br^-7

Multiple Choice

Why are ions formed?

To make our lives difficult

Because atoms want 8 valence electrons

Because atoms have the same number of protons and electrons

Because atoms gained neutrons

Isotopes

Isotopes are atoms of same element with same atomic number but different mass number

Calculation

Multiple Choice

Rubidium has two common isotopes, ⁸⁵Rb and ⁸⁷Rb. If the abundance of ⁸⁵Rb is 72.2% and the abundance of ⁸⁷Rb is 27.8%, what is the average atomic mass of rubidium?

85.468 amu

37 amu

85.6 amu

86.4 amu

Multiple Choice

Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.

204

206

207

208

Open Ended

Calculate the average atomic mass of oxygen if 0-16 is 99.76% abundant,O-17 is 0.04% abundant and O-18 is 0.20%

Type response here

protons, neutrons and electrons

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