Chemistry: Atoms
Compound - Answer A substance made up of atoms of two or more different elements
joined by chemical bonds. For example, water.
Element - Answer A pure substance made of only one kind of atom For example, a
diamond is made of pure carbon!
Plum Pudding Model (Thomson) - Answer JJ Thomson's atomic model which depicts a
positively charged space containing negatively charged electrons
Electrons - Answer Negatively charged particles
Proton - Answer A particle that has a positive charge and is found in the nucleus of an
atom
Sodium - Answer Atomic Number: 11
Symbol: Na
Aluminium - Answer Atomic Number: 13
Symbol: Al
How many neutrons does an aluminium atom have? - Answer 14
How many electrons does an aluminium atom have? - Answer 13
What is the mass number of lithium? - Answer 7
How many electrons does a lithium atom contain? - Answer 3
How many protons are there in an atom of potassium? - Answer 19
How many neutrons are there in an atom of potassium? - Answer 20
Can you draw a sodium atom? - Answer Sodium
How many electrons does a sodium atom have? - Answer 11
What is the electron structure of a sodium atom? - Answer 2.8.1
How many electrons are there in an aluminium atom? - Answer 13
What is the electron structure of aluminium? - Answer 2.8.3
What group can aluminium be found in? - Answer Aluminium is a group 3 element