WorksheetsChemistry recall test - part 1
Total questions: 20
Worksheet time: 11mins
What separation technique would we use to separate sand from water?
Chromatograpgy
Distillation
Filtering
Name the 3 sub-atomic particles.
Quark
Proton
Electron
Neutron
How many types of atom are there in an element?
1
2
3
4
How many types of atom are there in a compound?
1
2 or more
None
The atomic number is the number of _____.
Neutrons
Protons
Electrons
What separation technique would we use to separate water from ethanol?
Filtering
Distillation
Chromatography
Where in the atom are the protons and neutrons found?
The outer shell
The inner shell
The nucleus
What is the charge on an electron?
+1
-1
What is the charge on a neutron?
+1
No charge
-1
Why do atoms have no overall charge?
Number of electrons = number of protons
Number of neutrons = number of protons
Number of neutrons = number of electrons
What is the charge on a proton?
+1
-1
The mass number is the number of ________________ and ________________.
Protons
Electrons
Neutrons
Atoms of the same element can have different numbers of neutrons. What are these atoms called?
Isotonic
Isotope
Isolations
Which scientist thought that atoms were hard spheres?
Jones
Smith
Dalton
Which scientist discovered electrons?
JJ Abrahams
JJ Jones
JJ Thompson
Are mixtures chemically bound
Yes
No
How many states of matter are there
1
2
3
4
James Chadwick discovered the
Electron
Proton
Neutron
What are the starting materials in a chemical reaction called
Products
Reactants
Do electrons have mass
Yes
No
Yes but very small
