WorksheetsScience review quiz for midterms: 7th grade
Total questions: 10
Worksheet time: 3mins
What is a Bohr model?
An equation
A model of an atom
A compound
A molecule
How many atoms are in the Oxygen element?
4CuO5H
5
4
20
18
What is a period?
a dot.
A horizontal line on the periodic table that represents the number of energy levels in an atom.
A vertical line on the periodic table that represents the number of valence electrons in an atom.
None of the above
What is a group?
A vertical line on the periodic table that represents the number of valence electrons in an atom.
A horizontal line on the periodic table that represents the number of energy levels in an atom.
Things that are located close together.
None of the above
What is this?
3H3C2O5
A compound
A molecule
An Element
An atom
An _ _ _ _ _ _ _ _ _ Is the smallest particle in the universe: can't be separated, but can be combined.
(a)
What is an element?
A symbol of an atom that lists the symbol, atomic mass and number, and name.
A compound
Found in the periodic table
a molecule
Which element is this?
Oxygen
Helium
Carbon
Sodium
Is this balanced or unbalanced?
Mn(NO2)2 + BeCl2 -> Be(NO2)2 + MnCl2
(a)
True or false: A compound is made out of 2 or more atoms.
True
False
