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Chemistry > Introduction - TN > Flashcards

Introduction - TN Flashcards

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1
Q

What is the change from gas to solid called

A

Deposition

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2
Q

Diatomic Molecules

A

Iodine
Bromine
Chlorine
Fluorine
Oxygen
Nitrogen
Hydrogen

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3
Q

Monatomic

A

Single atoms

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4
Q

As you steadily add energy to a substance why is there a plateau of temperature every so often

A

Because energy is required to break bonds between the atoms

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5
Q

Describe the physical looks of Iron
Describe the physical looks of Sulfur
THEN
Describe the physical looks of Iron sulfide

A

Grey , Solid, Magnetic
Yellow, Solid, Non-magnetic

Grey-brown, Solid, Not magnetic

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6
Q

Describe the physical looks of Sodium
Describe the physical looks of Chlorine
THEN
Describe the physical looks or sodium chloride

A

White/rlly pale grey, Solid
Green gas

White solid

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7
Q

FeS
FeSO4
What are these two compounds called

A

Iron sulphide
Iron sulphate

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8
Q

How to draw a line of best fit

A

Straight line with the same number of points on each side

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9
Q

Diffusion experiment (tube)

A

Ammonia solution on cotton wool at one end
Hydrochloric acid on cotton wool on the other side
They react to form a ring of Ammonium chloride
Which is closer to the hydrochloric acid because it has a greater mass so the particles move slower than the ammonia solution

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10
Q

Diffusion

A

Movement of particles from an area of high concentration to an area of low concentration

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11
Q

Brownian Motion

A

The random movement of particles

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12
Q

Saturated

A

a solution in which on more solute can disssolve

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13
Q

suspension

A

a solid present in a solution because it did not dissolve

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14
Q

where on a graph is a solution saturated

A

anywhere on the line

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15
Q

Solubility

A

how much of a substance able to dissolve in a solvent at a given temperature

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16
Q

Properties of metals

A

Solid at room temp and pressure
High melting and boiling points
Good conductors of heat and electricity
Malleable
Ductile
Strong
Dense

17
Q

Why do metals have high melting and boiling points

A

due to a strong connection between positively charged metal ions and the sea of electrons

18
Q

Why are metals malleable ductile and strong

A

Due to their Giant Metallic Structure. The ions are able to slide over each other so the object will not shatter.

19
Q

Properties of non-metals

A

Thermal and electrical insulators
Most are liquids or gases at room temps
Brittle
weak
low melting and boiling points

20
Q

Which group on the periodic table is the halogens

A

group 7

21
Q

which group is the Noble gases

A

8 or 0

22
Q

what is a compound

A

A substance made up of one or more types of atom chemically bonded

23
Q

what is a mixture

A

two or more different substances not chemically bonded

24
Q

why are metals good conductors of electricity

A

because electricity is literally the flow of electrons and as the electrons in the structure are delocalised they are free to move and carry the charge

25
Q

Differences between chemical and physical changes

A

Two or more substances react to make a new substance in chemical reactions. IN physical reactions, no new chemicals are formed.

26
Q

what is a molecule

A

a compound is a type of molecule
Two or more atoms chemically bonded together

27
Q

Test for water

A

Anhydrous copper(11) sulphate turns from white to blue

28
Q

4 most abundant gases in the air

A

Nitrogen - 79%
Oxygen - 21%
Argon - 0.96%
Carbon Dioxide - 0.04%

29
Q

how to remember the Reactivity series

A

Please Potassium
Stop Sodium
Lithium
Calling Calcium
My Magnesium
Australia Aluminium
Zebra Zinc
In Iron
Class, Copper
She Silver
Grunts Gold

30
Q

Test for CO2

A

Limewater turning cloudy

31
Q

what is it and what does the top number on the periodic table tell you

A

mass number - number of protons and neutrons

32
Q

what is it and what does the bottom number on the periodic table tell you

A

atomic number - number of electrons OR no. protons (same)

33
Q

what is an isotope

A

atoms of the same element with different number of neutrons

34
Q

chemical and physical tests for water

A

anhydrous copper sulphate(white to blue)
-melting point=0C , boiling point=100C

35
Q

what is the difference between compounds and molecules

A

a compound is a TYPE of molecule

molecule = two or more different atoms chemically bonded together
compound = two or more different TYPEs of atoms chemically bonded together

36
Q

what are the three types of compound

A
  • metallic
  • ionic
  • covalent

Chemistry (30 decks)

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