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APPLIED SCIENCE UNIT 1 EXAM WITH CORRECT
ANSWERS AND DISTINCTION PASS
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- CORRECT ANSWER -A + BC → AC + B

What does Moths Eat Pink Butterflies stand for, and what does it mean for the compound? CORRECT ANSWER -Moths → Methane (1 carbon)
Eat → Ethane (2 carbons)
Pink → Propane (3 carbons)
Butterflies → Butane (4 carbons)

Give the Chemical and structural formula for Pentane
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(PENT=5)

Give the 3 ways in which a structural isomer can be formed
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The
hydrocarbon can be branched or unbranched
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The functional group can be located in a different position on the carbon backbone
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The functional group may be in a different arrangement but have the same atoms
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propanone and propanol)

How do you name a branched alkane? - CORRECT ANSWER -1
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2
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3
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Identify which carbon the alkyl group is on
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Unsaturated hydrocarbon
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Unsaturated hydrocarbon
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Find the longest carbon chain
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Number the carbons (func group on the lowest carbon number)
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Write the prefix (eg
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)
4
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5
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6
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Add in front (3-)
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- It can form single, double, or triple bonds with other carbons
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What is the relative mass of:
- Proton
- Neutron
- Electron - CORRECT ANSWER -- Proton= 1
- Neutron= 1
- Electron= 1/1840

What is the size on an atom? - CORRECT ANSWER -0
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5nm

How do you work out the number of neutrons in an atom? - CORRECT ANSWER -Neutrons=
mass number- atomic number

What is another name for the atomic number? - CORRECT ANSWER -Proton number

How do you calculate the charge on the nucleus? - CORRECT ANSWER -(1
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This means that:

- An isotope of an element has different masses
- It has the same number of protons and electrons
- Has a different number of neutrons in the nucleus

What is the equation for Ar? - CORRECT ANSWER -∑(isotope mass x Isotope abundance)
------------------------------------------∑Isotope abundance

What are the four forces in the nucleus? - CORRECT ANSWER -1
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Weak Nuclear Force
3
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Strong NuclearForce

Define Gravitational force
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Define Weak Nuclear force
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Define Electromagnetic Force - CORRECT ANSWER -Causes particles to either attract or repel on
which it acts
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- CORRECT ANSWER -The strong nuclear forces oppose the
electromagnetic force of repulsion between protons
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Which force is strongest in the nucleus? - CORRECT ANSWER -Strong nuclear

Give the sizes of all four forces in the nucleus
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What do elements in the same group have in common? - CORRECT ANSWER -They have the
same number of valence electrons on it's outer shell
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What is it seperating? CORRECT ANSWER -Metals and non-metals

What is the trend in electronegativity across and down the periodic table? - CORRECT ANSWER Along --> Increases
Down --> decreases

What name is given to a bond which shares electrons? - CORRECT ANSWER -Covalent Bond

What is a non polar covalent bond? - CORRECT ANSWER -The atoms have equal
electronegativity
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What is an ionic bond? - CORRECT ANSWER -A transfer of an electron(s) occurs
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What is the trend with atomic radius in the periodic table? - CORRECT ANSWER -Across -->
decreases
Down --> increases

What is a mixture? Give an example
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Example- the sea, vodka

Give the different types of mixtures
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The particles are extremely small, either ions or simple
molecules
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- The molecules are small enough that separation does not occur
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Give the state, what it is in, and an example of an Aerosol
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- CORRECT ANSWER -State= Liquid
What it is in= Liquid
Examples= Milk, hair cream

Give the state, what it is in, and an example of a Foam
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- CORRECT ANSWER -State= Liquid
What it is in= Solid
Examples= Cheese, butter, jam

Give the state, what it is in, and an example of a Sol
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- CORRECT ANSWER -- Copper and zinc
- Furniture, musical instruments

What components is Bronze made up of? Give a use
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- CORRECT ANSWER -- Carbon, silicon
and iron
- Pans and other utensils

What components is Nichrome made up of? Give a use

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