WorksheetsVV 6TH GRADE: Science Quiz 4 Review
Total questions: 18
Worksheet time: 11mins
Which of the following represents an element?
H2O
NaCl
H2
CaCO3
Which of the following is not a compound?
HCl
NaCl
Cl
CO2
Salt has a chemical formula of NaCl. Salt is a...
Compound
Mixture
Element
None of the Above
What cannot be broken down into other substances?
Compound
Solids
Mixture
Element
What is made up two or more elements that are chemically combined?
Element
Compound
Mixture
Solids
How many elements are represented in the compound?
Na2CO3
1
2
3
4
A combination of substances that are not chemically combined is called a(n)____________.
mixture
compound
element
metal
What is H2SO4
made up of?
2 hydrogen, 1 sulfur, 4 oxygen
2 hydrogen & 4 sodium
1 hydrogen, 2 sulfur, 4 oxygen
1 hydrogen & 6 sodium
How many atoms are there TOTAL in:
H2SO4
3
5
6
7
In this diagram, X represents...
A compound
An atom
A mixture
An element
What is the difference between Co and CO?
CO is an element but Co is a compound
Nothing is different. They are the same thing.
CO is two elements and Co is only one element
Co is not a pure substance
Which is the best description of an element?
A substance that cannot be broken down into simpler substances
A collection of atoms that have different abilities when joined together
A man-made mineral
A mixture of substances
How many different elements are in the compound?
12
3
24
6
"Na" is the element's
Chemical Formula
Compound
Name
Chemical Symbol
Carbon, Ar, and Ne are examples of elements.
Agree
Disagree
Which is the chemical symbol of Aluminum?
Carbon has the chemical formula (CO2). What is the ratio of Carbon atoms to Oxygen atoms?
1:2
2:2
2:1
4:2
What do the letters Fe and S stand for in the chemical formula FeS? (choose all that apply)
Feon
Iron
Sulfur
Tin
