Element, mixture, compound
The atom and elements
The periodic table
Counting/calculating number of atoms and subatomic particles
Physical and chemical change
100
Is this diagram displaying elements, compounds, or mixtures?
Element
100
Which of the subatomic particles have a positive charge?
Protons
100
Identify the atomic number of lithium
3
100
How many atoms are in H2O?
3
100
Is melting ice a physical or a chemical change?
physical
200
Is this diagram showing elements, compounds, or mixtures?
Mixture
200
Identify what part of the atom A is pointing to
Electrons
200
List 2 elements starting with the letter C
Carbon, Calcium, Caesium, Chromium, Cobalt, Copper, Cadmium, Copermicium, Cerium, Curlum, Californium
200
Identify the atomic mass of the following element
22.990
200
List 3 indicators of a chemical change
Colour, temperature, gas, precipitate, odour and light
300
Is this diagram showing elements, compounds, or mixtures?
Compound
300
Identify the part that B is pointing to
Neutrons
300
Identify the number of protons in the element below
7
300
Identify the number of nuetrons from the following element
18.4527
300
Butter melting on a hot pan. Is it a physical or chemical change?
Physical
400
Identify if the following is a element, mixture or compound
H4C2O
Compound
400
What is the name for the centre of an atom that contains protons and neutrons?
Nucleus
400
What element is in Group 2 and in Period 3
Magnesium
400
How many nuetrons does Boron have?
5.811
400
Cooking an egg on a fry pan, is this a physical or a chemical change? Justify your answer
Chemical, because it is not reversible and the colour changes
500
What is it called when 2 or more atoms bond together
Molecule
500
How many electrons are on the valence shell (the outside shell) of Fluorine
7
500
What is the name for the most stable elements on the periodic table?
Bonus 100 if you provide a reason
Noble gases
500
Groups 1, 2 and 13 react with which other groups?
Bonus 100 points for your reason
group 15, 16 and 17
500
wood is burned in a fire to create ash.
Identify whether it is a physical or chemical change, justify your answer
Chemical as a new substance has been created and it cannot be reversed