Chemisty Flashcards
Solid>liquid
Melting
Liquid>gas
Boiling/evaporation
Gas>liquid
Condensation
Liquid>solid
Freezing
Solid>gas
Sublimation
Gas>solid
Deposition
Differences between boiling and evaporation
Evaporation can happen below boiling point boiling can’t
Evaporation only happens at the surface boiling happens throughout the liquid
Boiling has bubbles and evaporation doesn’t
The 3 states of matter are…
Solid, liquid, gas
They longer you leave a substance to cool the _______ the temperature will get
Lower
Why don’t all substances change state at the same temperature
They all have different melting, boiling, freezing and condensation points
What is an atom made up of?
Electrons, neutrons and protons
Protons are…
Posotive
Neutrons have…
No charge
Electrons are…
Negative
How is a element in the periodic table laid out?
Relative atomic mass
Atomic symbol
Name
Atomic (proton) number
Why do atoms have no charge?
Because they have one positive and one negative they cancel each other out to make it neutral.
The number of protons and electrons is the…
Atomic number
The number of neutrons is the mass number - the atomic number
👍
The mass number is…
The atomic number + the number of nuetrons
Atoms have shells around the outside for the…
Electrons
The first shell can have __ electrons
2
The second shell can have __ electons
8
The third shell can have __ electrons
8
The fourth shell can have ______________ electrons
The rest of the
