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WorksheetsMatter and Periodic Table Recap 2020
Total questions: 24
Worksheet time: 14mins
A(n) _______________________ cannot be broken down into any other substance.
mixture
atom
element
compound
Na2CO3
In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagrams represent a pure substance ?
I and II
II , III and IV
III and IV
I, II, III, and IV
What is the picture displayed?
atom
element
compound
energy
This diagram represents...
An element
A molecule
A compound
A mixture of elements and compounds
Which example is not a pure substance?
N2
O2
Mixture of sand and water
H2O2
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
How many different elements are in the compound?
12
3
24
6
How many elements are in this compound?
13
6
4
3
One way to tell how many elements a compound has is to..
the the square root of the total number of lettersThis is a wrong answer the the square root of the total number of letters
count the capital letters
add up all the numbers
count the letters
Identify the example
Elements
Mixture
Compounds
Examples are diamonds (C) and Uranium (U)
elements
mixtures
compounds
Which example is a compound?
N2
O2
Cu
H2O2
The chart below lists some substances and their symbols. How many of these substances are examples of elements?
1
2
3
4
In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?
I
II
III
IV
