Worksheets8th grade Chem 1 Review
Total questions: 20
Worksheet time: 21mins
The vertical (up and down) columns in the Periodic Table are called (a)
Elements in the same column of the periodic table always have the same number of (a)
How do you find the number of neutrons in an element?
add the protons and electrons
subtract the electrons from the protons
subtract the atomic number from the atomic mass
the number of protons and neutrons are the same
The number of energy shells in a lithium atom are (a)
The element Gold is found in period (a) , which means gold has (b) energy shells
Beryllium has an atomic number of 4 and an atomic mass of 9.012. How many neutrons does Beryllium have?
4
5
9
13
Argon
Lithium
Neon
Sodium
Beryllium
How many valence electrons are in this element?
7
2
4
3
Calculate the number of neutrons for this element.
The symbol for iodine is (a) this element is found in group (b) period (c) . This element has (d) valence electrons and (e) energy shells. This element has (f) protons, (g) electrons, and (h) neutrons.
What element contains a mass of 64 and it has 35 neutrons?
Gadolinium
Copper
Zinc
Bromine
An atom of a certain element has a mass of 48, it has 22 protons and 22 electrons. How many neutrons are in this atom?
26
48
70
35
A researcher wants to experiment with an element that reacts like Calcium but has a greater atomic mass. Which element should the researcher select for the experiment?
Barium
Titanium
Beryllium
Tin
Which of the following have 7 valence electrons? Select all that apply.
F
Br
Fr
Db
N
Which elements are metalloids? Select all that apply.
Calcium
Boron
Aluminum
Polonium
Arsenic
Which of the following are considered to be non-metals?
Helium
Antimony
Hydrogen
Zinc
Chlorine
Select the elements that are metals.
Iodine
Erbium
Polonium
Lead
Hydrogen
The subatomic particles found on the outermost shell and is responsible for an atom's reactivity is called (a)
What tells you the number of protons and electrons in an atom
atomic mass
valence electrons
atomic number
mass number
What is the atomic mass for the following elements. Remember to round your answer.
Zinc (a)
W (b)
Lead (c)
Xe (d)
