Element Symbols 1
Element Symbols 2
Atomic Structure
Periodic Table
Metals & Non-metals
Elements, Compounds & Mixtures 1
Elements, Compounds & Mixtures 2
Chemical Reactions
100
H
hydrogen
100
The chemical symbol for oxygen is
O
100
Protons have a _____________ charge.
positive
100
How many elements are on the periodic table?
118
100
Would you find metals or non-metals in the top right area of the periodic table?
Non-metals
100
These molecules are made up of the same type of atoms.
Elements
100
Which of the following images show an element?
Images B and D
100
A chemical reaction can be described using symbols and numbers in a chemical e____________.
equation
200
Mg
magnesium
200
The chemical symbol for helium is
He
200
Electrons have a ____________ charge.
negative
200
The atomic number of an element represents the number of __________ in the nucleus.
protons
200
Which type of elements are found in a diagonal line between metals and non-metals?
Metalloids
200
These molecules are made up different types of atoms.
Compounds
200
Which of the following images show a compound?
Images A and C
200
Reactants are the starting substances in a chemical reaction - true or false?
True
300
Cl
chlorine
300
The chemical symbol for aluminium is
Al
300
The centre of an atom is called the ______________.
nucleus
300
The number of protons in a stable element is equal to the number of _____________.
electrons
300
Which of the following elements is a metal?
Bromine, carbon, lithium, arsenic
Lithium
300
Is H2O2 an element or a compound?
Compound
300
Which of the following images is a mixture of ELEMENTS?
Image A
300
When solutions A and B are mixed and bubbling occurs, this is evidence of a ______ being produced.
gas
400
Na
sodium
400
The chemical symbol for iron is
Fe
400
What particles are in the nucleus of an atom?
protons and neutrons
400
What are the columns of the periodic table called?
groups
400
Which of the following elements is a non-metal?
Fe, F, Mg, Na
F - fluorine
400
Is C6H12O6 an element or a compound?
Compound
400
Which of the following images is a MIXTURE of two different COMPOUNDS?
Image B
400
Is this chemical equation balanced?
No - the oxygen atoms are not equal
500
K
potassium
500
The chemical symbol for copper is
Cu
500
Correctly identify the particles a, b and c.
a = electron
b = neutron
c = proton
500
The periodic table is arranged in order of ___________ __________.
atomic number
500
Is the first element on the periodic table a metal, non-metal or metalloid?
Non-metal - hydrogen is the only non-metal on that side
500
Any two or more atoms bonded together are known as a...
molecule
500
Which of the following images is a MIXTURE of elements AND compounds?
Image C
500
Balance this chemical equation:
2Na + 2HCl ---> 2NaCl + H2