Font size
WorksheetsCHEMISTRY EXAM
Total questions: 22
Worksheet time: 15mins
Which one is not a property
Mass
Density
Melting Point
Solubility
What is the difference between a physical and chemical change?
Physical just changes what it looks like chemical changes how the atoms bond
Physical and chemical changes are the same
Physical is the action of what you do and chemical is what you see the stuff doing
Physical and chemical changes are not related to each other
Balance this equation
6P + O2 -------> 3P2O5
P4 + O2 ------> 2P2O5
2P + 2O2 ------> P2O5
4P + 5O2 ------> 2P2O5
what is an atom
smallest part of the universe
smallest part of a substance
smallest part of anything
smallest part of water
protons
negative charge, nucleus
positive charge, shells
positive charge , nucleus
neutral charge, nucleus
electrons
no charge, nucleus
positive charge, nucleus
negative charge, shells
negative charge, nucleus
atomic number
number of protons/stands for an element
number of neutrons
number of electrons
number of protons and neutrons
mass number
number of protons
number of electrons
number of protons and electrons
number of protons and neutrons
same number of protons, different number of neutrons
atomic number
mass number
isotope
ion
How many neutron are in the atom "K"?
7
2
39
12
Rusting needs...
Oxygen and Co2
Oxygen and acids
water and Co2
Oxygen and water
How to prevent rusting?
Washing with water
Sacrificial protection
Icing
Covering it from the sun
Combustion is.....
When the substance is burnt with excess oxygen
When the metal is electroplated
When the Enthalpy changes
The change of momentum
What are the components of an atom?
nucleus
electrons
protons
neutrons
Which type of bond combines a metal atom with a non-metal atom?
Covalent
Metallic
Ionic
None of the above
