Chapter 1 Flashcards
What is the sentence for remembering the first 10 elements?
Hard Hearted Little Beggar Boys Catch Newts Or Fishes Near Naples
What is the sentence for remembering the second 10 elements?
Magnificent Albert Sings Pop Songs Clearly Around Kitchen Cabinets
What is the law of conservation of mass?
The total mass of products formed in a reaction is equal to the total mass of the reactants
What is distillation?
It separates liquid (solvent) from a soluble solid (solute)
What is fractional distillation?
It separates miscible liquids (liquids that dissolve in each other)
What do the molecules need for fractional distillation to work?
Different boiling points
What is the difference between chemical and physical separate processes?
Chemical- irreversible, changes in light, temp
Physical- reversible
What is an element?
A substance made of the same atom
What is a compound?
Molecules made of different atoms
What is a mixture?
A substance made of atoms and molecules
Relative atomic mass is?
No. of protons + no. of neutrons
Atomic number is?
The no. of protons
Theoretically electrons
You never change ___ when balancing an equation?
The neutrons
How is a compound different to a molecule?
Compound- molecules made of different or the same types of atom
Molecule- made of the same type of atom chemically bonded together
Paper chromatography is used to?
Separate miscible liquids
Colours in a dye
