WorksheetsElements and Compounds
Total questions: 21
Worksheet time: 6mins
What is the substance that is made of one kind of atom?
Molecule
Element
Atom
What is the element with the symbol 'Na'?
Nitrogen
Sodium
Neon
What is the element with the symbol 'Fe'?
Fluorine
Iron
Potassium
What is the element with the symbol 'Hg'?
Hidrogen
Mercury
Chlorine
Which gases are produced if the electricity passes through the water?
Helium and Oxygen
Oxygen and Carbondioxide
Oxygen and Hydrogen
Is air an element?
Yes
No
What is the symbol for Calcium?
CA
Ca
C
Cal
Choose the correct answer in a correct order.
In a periodic table, The columns are called ............. and
rows are called .............
period, group
group, period
Which one has the smallest mass in the periodic table?
Helium
Lithium
Hydrogen
Which one is wrong about the metals?
They are shiny.
They conduct electricity well.
They are mostly liquid in room temperature.
If the different atoms are joined tightly together, the substance is called
Element
Compound
Atom
Which two elements are combined in hydrogen sulfide?
Hydrogen and Sulfur
Hydrogen and Sulfide
How do you write the component name of chlorine and sodium ?
Sodium chloride
Sodium chlorine
Chlorine sodiumide
Which elements are combined in calcium nitrate?
Calcium and nitrogen
Calcium, nitrogen, hydrogen
Calcium, nitrogen and oxygen
Calcium and Sodium
What is the tiniest particle of an element that can exist?
Compound
Hydrogen
Atom
Molecule
What is the name of the element with symbol 'B'?
Beryllium
Argon
Neon
Boron
What does the compound of CaCO3 contain?
One calcium atom, three carbon atoms, three oxygen atoms
One calcium atom, one carbon atom, three oxygen atoms
Three calcium atoms, three carbon atoms, three oxygen atoms
One calcium atom, one carbon atom, one oxygen atom
Which two elements are contained in all hydroxides?
Hydrogen and Oxygen
Helium and Oxygen
Mercury and Oxygen
Helium and Hydrogen
How many different elements are combined together in LiOH?
Two
Three
Four
Five
Which elements are found in copper sulfate ?
Copper and Sulfur
Copper, Sulfur and Hydrogen
Copper, Sulfur and Oxygen
Which one is the formula for sulfur dioxide?
SO
SO2
OS
OS2
