Average atomic mass

Average atomic mass

10th Grade

15 Qs

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Average atomic mass

Average atomic mass

Assessment

Quiz

Chemistry

10th Grade

Medium

NGSS
MS-PS1-1, HS-PS1-8, HS-PS1-7

+1

Standards-aligned

Created by

Melissa Stokley

Used 16+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you determine the relative atomic mass of an atom?

add protons, neutrons, and electrons

add protons and neutrons

subtract mass number and protons

add protons and electrons

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

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

Tags

NGSS.MS-PS1-1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The masses of atoms are generally given in what units?

grams

atomic mass units

moles

micrograms

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The most common isotope of oxygen is ___.

oxygen-16

oxygen-8

oxygen-15

oxygen-18

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the average atomic mass of silver?

108 g

107 amu

107.8682 amu

107.9692 g

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu.


219.7

220.4

221.0

218.5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An unidentified element has two naturally occurring isotopes. One has an atomic mass of 78.92 amu and a natural abundance of 50.69%. The other has a mass of 80.92 amu and a natural abundance of 49.31%. What is the identity of the element?

bromine

krypton

boron

arsenic

Tags

NGSS.HS-PS1-1

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