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Year 9 Chemistry Revision 2016 Flashcards | StudBud
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Year 9 Chemistry Revision 2016
Year 9 Chemistry Revision 2016
17 terms
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easy year 9 pre test on grade 8 chemistry
Flashcards
17 cards
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Questions
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Answers
1
Sulfuric Acid has the formula H
2
SO
4
. What does this formula tell us?
2 sulfur and hydrogen, 4 oxygen
6 hydrogen, sulfur and oxygen atoms.
2 hydrogen, 1 sulfur, and 4 oxygen
2 Hydrogen, 4 sulfur and 4 oxygen
2
The centre of an atom is called the _________________.
Nucleus
Proton
DNA
Neutron
3
Atoms cannot be created or destroyed but can be rearranged to form different substances.
TRUE
FALSE
4
Atoms are made up of three subatomic particles. These are
Protons, neutrons and electrolytes
teeny bits, weeny bits and electrons
protons, neutrons and electrons
proteins, nuclei and electrons
5
Sodium Chloride (NaCl) is more commonly known as
cinnamon
pepper
sugar
table salt
6
All matter is composed of indivisible particles called ______________.
Molecules
Atoms
Compounds
Elements
7
The three wires with the highest electrical resistance, in order from highest to lowest are:
Iron, Tungsten, Aluminium
Aluminium, tungsten, iron
Silver, copper, gold
Iron, Tungsten, gold
8
What scientist developed a model of matter that used atoms as its building blocks?
Albert Einstein
Charles Darwin
John Dalton
Isaac Newton
9
How many NATURALLY OCCURRING elements are found on the periodic table?
500
10
199
91
10
What does the image below represent?
An alloy
An element
An atom
A compound
11
Carbon forms crystal lattices to make diamond and graphite.
FALSE
TRUE
12
What is the chemical symbol for the ELEMENT Gold?
Co
Go
Ag
Au
13
A list of the known elements from lightest to heaviest is represented by the
table periodica
periodic table
einsteins table
elemental report
14
The symbol for sodium comes from its latin name 'Natrium'. What is the symbol for sodium?
Na
Ne
K
Ni
15
What is the definition of an ELEMENT in chemistry?
Substances that are made up of just one type of atom
Molecules such as CO2 and H2O
Earth, fire, water
Substances that are made up of different types of atoms
16
Two or more elements chemically joined together is called a/an
atom
molecule
ion
isotope
17
Often the chemical symbol for an element comes directly from its name. What does Ca represent?
Calcium
Sodium
Lithium
Potassium
