How do you determine how many neutrons an element has?

subtract the atomic number from the atomic mass

Why do elements on the periodic table have neutral charges?

they have the same # of protons and electrons

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Semi-blind Quiz!: Atoms and the Periodic Table (V2)

13 termsStudBud Administration227 plays

As a review activity going into second semester #highschool #chemistry, we developed this semi- #blindquiz! to review how to use atomic number and mass to determine the number of protons, electrons, and neutrons in an atom.

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Questions 13

Answers

1
How many protons does calcium have?
20 protons
120 protons
60 protons
40 protons
2
How do you determine how many neutrons an element has?
subtract the atomic number from the atomic mass
add the atomic number and atomic mass
it's equal to the atomic mass
it's equal to the atomic number
3
What two things are used to calculate an atom's mass?
neutrons and protons
protons and quarks
electrons and neutrons
protons and electrons
4
How many protons does potassium have?
20 protons
19 protons
39 protons
58 protons
5
Why do elements on the periodic table have neutral charges?
they have the same # of electrons and neutrons
they have the same # of protons, electrons, and neutrons
they have the same # of protons and neutrons
they have the same # of protons and electrons
6
Using the atomic mass, how many protons and neutrons are in calcium?
20 protons, 20 neutrons
20 protons, 40 neutrons
40 protons, 20 neutrons
20 protons, 60 neutrons
7
How many neutrons does hafnium have?
250 neutrons
72 neutrons
178 neutrons
106 neutrons
8
If an element's atomic number is 34 and its atomic mass is 78.97 amu, how many protons does it have?
34 protons
113 protons
79 protons
34
9
What is potassium's atomic mass?
39 AMU
58 AMU
20 AMU
19 AMU
10
How many neutrons does potassium have?
20 neutrons
58 neutrons
19 neutrons
39 neutrons
11
If a neutral atom has an atomic number of 14 and an atomic mass of 28 amu , how many electrons does it have?
28 electrons
14 electrons
42 electrons
7 electrons
12
What information on the periodic table tells you that potassium has 19 protons?
the atomic mass
the element's symbol
the atomic number
the element's name
13
Unbonded elements on the periodic table have an equal number of protons and electrons.
True
False

Semi-blind Quiz!: Atoms and the Periodic Table (V2) Flashcards | StudBud

Semi-blind Quiz!: Atoms and the Periodic Table (V2)

13 termsStudBud Administration227 plays

Flashcards13 cardsFPractice quizPHost liveL

Questions 13

Answers

1
How many protons does calcium have?
20 protons
120 protons
60 protons
40 protons
2
How do you determine how many neutrons an element has?
subtract the atomic number from the atomic mass
add the atomic number and atomic mass
it's equal to the atomic mass
it's equal to the atomic number
3
What two things are used to calculate an atom's mass?
neutrons and protons
protons and quarks
electrons and neutrons
protons and electrons
4
How many protons does potassium have?
20 protons
19 protons
39 protons
58 protons
5
Why do elements on the periodic table have neutral charges?
they have the same # of electrons and neutrons
they have the same # of protons, electrons, and neutrons
they have the same # of protons and neutrons
they have the same # of protons and electrons
6
Using the atomic mass, how many protons and neutrons are in calcium?
20 protons, 20 neutrons
20 protons, 40 neutrons
40 protons, 20 neutrons
20 protons, 60 neutrons
7
How many neutrons does hafnium have?
250 neutrons
72 neutrons
178 neutrons
106 neutrons
8
If an element's atomic number is 34 and its atomic mass is 78.97 amu, how many protons does it have?
34 protons
113 protons
79 protons
34
9
What is potassium's atomic mass?
39 AMU
58 AMU
20 AMU
19 AMU
10
How many neutrons does potassium have?
20 neutrons
58 neutrons
19 neutrons
39 neutrons
11
If a neutral atom has an atomic number of 14 and an atomic mass of 28 amu , how many electrons does it have?
28 electrons
14 electrons
42 electrons
7 electrons
12
What information on the periodic table tells you that potassium has 19 protons?
the atomic mass
the element's symbol
the atomic number
the element's name
13
Unbonded elements on the periodic table have an equal number of protons and electrons.
True
False