Review 2 Atoms and the Periodic Table
Authored by Susan Ellis
Chemistry
8th Grade
NGSS covered
Used 37+ times
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55 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between the number of electrons in calcium, Ca and the number of electrons in kryton, Kr?
20
36
16
56
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many protons, neutrons and electrons are there in an atom of mercury, Hg with a mass of 201?
80 protons 80 neutrons, 80 electrons
80 protons, 121 neutrons, 80 electrons
121 protons, 80 neutrons, 80 electrons
121 protons, 80 neutrons, 121 electrons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An atom of a certain element has 38 protons, 38 electrons and a mass of 88 and is an alkali earth metal. How many neutrons does it have in the nucleus of the atom?
38
86
50
146
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of particles are found in the cloud surrounding the nucleus?
positively charged particles
particles with no charge
negatively charged particles
both positive and negatively charged particles
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
what is the mass number of an atom with 30 protons and 35 neutrons?
30
65
60
35
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
what is the name of the element with 50 electrons in the electron cloud?
Tin
Iron
Phosphorus
Lead
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lead has a mass number of 207, how many protons, neutrons and electrons does it have?
82 protons, 207 neutrons, 125 electrons
82 protons, 125 neutrons, 125 electrons
82 protons, 125 neutrons, 207 electrons
82 protons, 125 neutrons, 82 electrons
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