3.1 introduction Flashcards
What is waters chemical compound
H20
What is Ammonia chemical compound
NH3
what is Hydrochloric acid Chemical compound
HCL
what is Sulphuric acid Chemical compound
H2SO4
what is Methane Chemical compound
CH4
what is Sodium Hydroxide Chemical compound
NaOH
what is Potassium Hydroxide Chemical compound
KOH
what is Ammonium Hydroxide Chemical compound
NH4OH
what is Carbon dioxide Chemical compound
CO2
what is Carbon monoxide Chemical compound
CO
what is Sulphur dioxide Chemical compound
SO2
How would you describe a PH level above a 7
Alkaline
How would you describe a PH level below a 7
Acidic
How would you describe a PH level equal to a 7
Neutral
What colour is Methane orange in acid
Red
What colour is Methane orange in Alkaline
yellow
What colour is Methane orange in neutral
Yellow
What colour is Phenolphthalein in acid
Colourless
What colour is Phenolphthalein in Neutral
Colourless
What colour is Phenolphthalein in Alkaline
Pink
What colour is Red litmus paper in Acid
Red
What colour is Red litmus paper in Neutral
Stays red
What colour is Red litmus paper in Alkaline
Blue
what colour is Blue litmus paper in Acid
Red
what colour is Blue litmus paper in Neutral
Blue
what colour is Blue litmus paper in alkaline
stays Blue
What is a description of particles in a Solid
Ordered structure
close together
Vibrates around a fixed position
What is a description of particles in a Liquid
Radom structure
close together
Move freely past each other
What is a description of particles in a Gas
Radom structure
far apart
move freely in all different directions
What is the process called when it goes from a solid to a liquid
Melting
What is the process called when it goes from a Liquid to a solid
freezing
What is the process called when it goes from a liquid to a gas
Evaporation/ Vaporizing
What is the process called when it goes from a Gas to a Liquid
Condensing
What is the process called when it goes from a solid to a gas
Sublimation
What is the process called when it goes from a gas to a solid
deposition
When a solid is heated to its melting point what happens
The particles gain kinetic energy
Until the particles have enough energy to overcome the forces holding them together.
the particles start to move past each other forming a liquid
When a gas is cooled to it’s boiling point what happens
The particles lose Kinetic energy, moving more slowly
forces of attraction start to form between particles
the forces start to hold the particles together as a liquid
How can you tell if something is a pure substance
single sharp boiling and melting point
What kind of boiling point does a Mixture have
A mixture will melt and boil over a range of temperatures
what is a compound
Different atoms which are chemically bonded together
What is an Element
Only one kind of atom
what is a pure substance
All the particles are the same
What is a mixture
Contains different particles
What is the test for water
Anhydrous copper (II) Sulphate tuns from white to blue
What are two physical test that let you know it is pure water
Boils at 100c
melts at 0c
What are Properties of a metal
shiny
malleable
electrical conductors
High MP/BP
Form Alkaline oxides
What are Properties of a Non-Metal
Dull
Brittle
low MP/BP
Electrical Insulators
Form Acid oxides
Which side of the periodic table are Metals
Left
right- non metals
What is an observation of Magnesium
Bright white light and white powder formed
What is an observation of Hydrogen
lit splint
squeaky pop
What is an observation of Sulphur
Blue flame
What is the percentage of nitrogen in the air
78%
What is the percentage of Oxygen in the air
21%
What is the percentage of Argon
0.96%
What is the percentage of Carbon Dioxide
0.04%
What colour is copper Carbonate
Green solid
What colour is copper oxide
Black solid
What colour is carbon dioxide
Colourless gas