Everything Flashcards
what method is uses to separate a insoluble solid and liquid
Filtration
What method is used to separate dyes
Chromotography
What method is used to separate soluble solid from liquid
crystallisation
What method is used to separate liquid from a soluble solid
distillation
Why are elements more reactive as you move down G1
Because elements in G1 need to lose 1 electron to become stable, so as you go down G1 elements gain an extra electron shell, so it is easier to lose it because there is less forces of attraction
Why are elements less reactive as you go down G7
Because elements in G7 need to gain 1 electron to become stable, so as you go down G7 elements gain an extra electron shell, so it is harder to gain an electron because there are less forces of attraction
What is the change in matter called from liquid to solid
Freezing
What is the change in matter called from solid to liquid
Melting
What is the change in matter called from liquid to gas
Evaporation or boiling
What is the change in matter called from gas to liquid
condensation
What is the change in matter called from gas to solid
Sublimation
How does increasing the pressure increase the rate of reaction
Because the frequency of collisions would increase and frequency of successful collisions because there are more particles per unit cubed
How does increasing concentration increase RoR
Because there would be more frequent successful collisions in the same sized volume
How does increasing temperature increase RoR
Because the particles have more kinetic energy so there are more frequent successful collisions as the particles are more likely to overcome the activation energy
How to calculate the mass number
No. of Protons + No. of neutrons
What is the Atomic number equal to
No. of Protons
what experiment do you do to see diffusion
Ammonia and Hydrogen Chloride, sodium and hydrogen both diffuse at both ends of the tube. When they meet they react and form ammonia chloride. Ring forms closest to hydrochloric acid because ammonia particles are lighter and move quicker
What is a solution
a mixture of solute and solvent
What is the solute
Substance being dissolved
What is the solvent
Liquid its dissolving into
how to calculate solubility
mass of solid/mass of water removed x 100
Does solubility decrease as you increase the temperature
No it increases
What charge do electrons have
Negative
What charge do protons have
Positive
