WorksheetsQuarterly Review Part 1 7th Grade
Total questions: 20
Worksheet time: 15mins
Based on the information in the table, which of the four substances below is a compound?
CO
He
Si
Fe
Which of these substances are elements?
hydrochloric acid and carbonic acid
carbon dioxide and water
oxygen and helium
water and oxygen
Which model is used by scientists to determine the properties of elements?
a Punnett square
the Periodic Table
a pedigree chart
the rock cycle
What do the symbols (shaded circle) and (open circle) represent in the model?
genetic material
chemical bonds
cells
atoms
The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they
are metals
react in similar ways
have the same atomic mass
are noble gases
Water (H2O) is not found on the Periodic Table of the Elements because water is
an atom
a liquid
a mixture
a compound
In which group of the Periodic Table of the Elements are the noble gases located?
18
1
2
17
All matter is made up of
cells
atoms
molecules
compounds
One element that has chemical properties similar to the chemical properties of fluorine is:
Chlorine
Oxygen
Sodium
Carbon
Which element is classified as a noble gas?
sulfur
oxygen
argon
nitrogen
Which of the following best describes a compound?
A substance made of only one type of atom
A substance made of two or more elements chemically bonded together
A mixture of two or more elements that are not chemically combined
A group of atoms with the same number of protons
What information does the Periodic Table provide about elements?
Their atomic number, symbol, and average atomic mass
Their uses in industry
Their melting and boiling points only
Their physical state at room temperature only
Which of the following is NOT found on the Periodic Table of the Elements?
Oxygen
Hydrogen
Water
Helium
What do all elements in the same group of the Periodic Table have in common?
They have the same number of protons
They have similar chemical properties
They have the same atomic mass
They are all gases
Which statement best describes an element?
A group of molecules joined together
A substance made of two or more types of atoms
A substance that cannot be broken down into simpler substances by chemical means
A mixture of different compounds
What does the 1.00794 stand for?
Hydrogen
atomic number
atomic mass
atomic explosion
What is the number of protons that the element in this image contain?
14
7
15
18
