Elements, Atoms, Compounds Flashcards
Right or left does the non metals occur?
The right hand side.
Is the metals on the left hand side or the right hand side?
Metals.
How much space does the non metals take up in the periodic table?
1/5th.
How much space does the metals take up in the periodic table?
4/5th.
What do all the bottom numbers of element have?
Atomic numbers.
What is the group 1?
Alkali metals
What is group 7?
Halogen. ( salt maker )
Name examples of alkali metals!
Lithium, sodium, potassium, rubidium, caeslum,francium
Name the halogen group 7
Flourine, chlorine, bromine, iodine, astatins
What is a group 0/8?
Noble gas.
Name the noble gases.
Helium , neon, argon, krypton, xeonon, radon.
What is a molecule
A molecule is two or more atoms chemically joined
Can they come from the same element or different elements?
Both.
What is a compound?
Two or more atoms from different elements chemically joined
Can you have a compound of two atoms that are the same?
No you can’t, as they are chemically joined.
Work out this compound.
Iron+sulphur
Iron sulphide
What colour is iron?
Grey
What colour is sulphur?
Yellow
What state is iron?
A solid.
What state is sulphur?
Solid
Is iron magnetic?
Yes
Is sulphur magnetic?
No
Is iron dense?
It is denser than water.
Is sulphur dense?
Less dense than water.
How many properties does a compound have?
It has very different properties to the element
What is a compound made from
Conducts elect
What does an atoms of a gas look like?
🌕
🌕 🌕 🌕
What does atoms of an element look like?
Like a pyramid.
🌕🌕🌕🌕🌕
🌕🌕🌕
🌕🌕
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What does a molecule of 2 identical atoms look like?
🌕🌕 🌕🌕
🌕🌕
🌕🌕 🌕🌕
Like a square and two in the middle.
What does a compound that’s also a molecule look like?
🌕 🌕
🌕🌕 🌕🌕
🌕
🌕🌕 🌕
🌕🌕
What do all elements have?
There own symbol.
Do some questions on elements in compounds.
Hydrogen and chlorine =
Hydrogen chloride
Lithium + fluorine=
Lithium fluoride
Nitrogen + oxygen
Nitrogen dioxide
Carbon+oxygen =
Carbon dioxide
Carbon + hydrogen
Methane
CH4
1 Carbon+ 4 hydrogen
Al 0
2 3
2 aluminium + 3 oxygen
Word equations.
Potassium chloride + fluorine =
Potassium fluoride+ chloride
Potassium iodide + chloride=
Potassium chloride + iodine
Chemical equations. KCL+ F2 -------- KF+CL2 K=2 --------- K= X2 Cl=2 --------- Cl=2 F=2 -------- F=X2
BALANCE IT OUT
Chemical equations. KCL+ F2 -------- KF+CL2 K=2 --------- K= 2 Cl=2 --------- Cl=2 F=2 -------- F=2
What does the staircase do?
It divides the non metals from the metals.
Name two liquid elements
Hg- Mercury - is a metal
Br- bromine - non metal
What is iron sulphide made up of
Iron and sulphur
HI
Hydrgen+iodine
C02
Carbon dioxide
Ch4
Carbon and hydrogen= methane
Cacl2
Calcium chloride
What does dio mean
Two
Are halogens safe to work with?
No
Going down the group how does the melting point change?
It increases
Going down the group how does the boiling point change?
It increases
Going down the group how Does the density change?
Increases
What state is fluorine
Gas
What colour is fluorine
Light green
What state is chlorine
Gas
What colour is chlorine?
Green/ yellow
What state is bromine?
Liquid
What colour is bromine?
Red/ brown
What state is iodine?
Solid
What colour is iodine?
Purple
What state is Astastine?
Solid
What colour is Astastine?
Black
