Mock Yr 10 Flashcards
What 2 things do ionic bonding
A metal and a non metal
What happens to the metals electrons in ionic bonding
The metal loses electrons
What is a covalent bond
A pair of electrons shared between 2 atoms
What is different about metallic bonding
The sea of delocalised electrons
Why are metals malleable
The layers of metal can slide over each other
2 properties of giant covalent structures
Very high melting and boiling points
Or
Don’t contain charged particles
Or
Aren’t soluble
What happens to mass in a chemical reaction
It’s conserved
What’s the top little number on the periodic table
Relative atomic mass
What’s the bottom little number in the periodic table
Atomic number
The formula for concentration
Concentration = mass of solute
—————————
Volume of solution
What is needed for reactions to take place
SUCCESSFUL collisions
What colour does lithium give when burning
Crimson red
What colour does sodium give when burning
Yellow
What colour does pottasium give when burning
Lilac
What colour does calcium give when burning
Orange-red
What colour does copper give when burning
Blue-green
What colour precipitate forms when aluminium mixes with NaOH
White at first but then it goes colourless in excess of NaOH
What colour precipitate forms when calcium is mixed with NaOH
White
Copper + NaOH
Blue precipitate
Iron(II) + NaOH
Green precipitate
Iron(III) + NaOH
Brown precipitate
What’s the test for halide ions
Add dilute nitric acid followed by some drops of silver nitrate solution
What colour is chloride when used in a halide test
White precipitate
What colour is bromide when used in a halide test
Cream precipitate
What colour is iodide when used in a halide test
Yellow precipitate
What 2 types of thing covalently bond
2 non-metals
On the periodic table what does the atomic number equal
The number of protons or electrons
What tells you how many neutrons an atom has in the periodic table
Mass number - Atomic number
