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12 questions
Which of the following is the symbol for Palladium?
P
Pt
Pd
Pa
Which of the following elements have the atomic number 17?
Nitrogen
Chlorine
Argon
Cobalt
Which part of the atom is the arrow pointing to?
Proton
Neutron
Electron
Nucleus
What elements are in the compound lithium chlorate?
Lithium and chlorine
Lithium and calcium
Lithium, chlorine and oxygen
Which of the following is a chemical reaction?
Water boiling
A tree growing
Ice melting
Glass smashing
What is the test for carbon dioxide gas?
It burns with a 'pop'
It turns lime water clear
It turns lime water milky/cloudy
It turns cobalt chloride paper pink
What are the products of combustion?
carbon dioxide
carbon dioxide and hydrogen
hydrogen and water
carbon dioxide and water
Which of the following statements are false?
A new substance is always formed during a physical change.
A chemical reaction is irreversible.
A physical change is easy to reverse.
A chemical reaction always forms a new substance.
What is the sign of the chemical reaction taking place in the image?
A solid is produced (precipitation)
Colour change
A gas is released (effervescence)
What is the name of the group highlighted in red on the periodic table?
Alkali metals
Transition metals
Noble gases
Halogens
Exothermic reactions take in heat energy. True or false?
True
False
The columns of elements on the periodic table are called what?
Periods
Rows
Groups
Families
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