What ions do you need to know for GCSE?
To deduce the formulae of ionic compounds , the formulae of their ions can be used. The table shows the names and formulae of some common ions….Names and formulae of ionic compounds.
| Cations | Anions |
|---|---|
| Lithium, Li + | Chloride, Cl – |
| Sodium, Na + | Bromide, Br – |
| Potassium, K + | Iodide, I – |
| Silver(I), Ag + | Oxide, O 2- |
What are ions GCSE?
Ions are electrically charged particles formed when atoms lose or gain electrons . This loss or gain leaves a full outer shell, so the electronic structure of an ion is the same as that of a noble gas (such as helium, neon or argon).
How many GCSE chemistry topics are there?
There are 10 subjects covered by the GCSE chemistry syllabus, split across two test papers: Atomic structure and the periodic table. Bonding, structure, and the properties of matter.
What is an ion Aqa chemistry?
An ion is an atom or group of atoms with a positive or negative charge .
What are polyatomic ions GCSE?
Some ions are formed from groups of atoms . The table shows the names and formulae of some polyatomic ions . Cations are positively charged ions, and anions are negatively charged ions. Cations.
What is an ion in Igcse Chem?
An ion is an electrically charged atom or group of atoms formed by the loss or gain of electrons.
What are some examples of ions?
Ions with a positive charge are called cations. Ions with a negative charge are called anions. Many normal substances exist in the body as ions. Common examples include sodium, potassium, calcium, chloride, and bicarbonate.
What are atoms GCSE?
Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The number of subatomic particles in an atom can be calculated from the atom’s atomic number and mass number.
What is C10 GCSE?
C10 Organic reactions. Reactions of the alkenes. Structures of alcohols, carboxylic acids and esters. Reactions and uses of alcohols. Carboxylic acids and esters.
What is an ion GCSE AQA?
What charge does NO3 have?
Nitrate, chemical formula NO3, has a chemical charge of -1. Ion nitrates have a negative one formal charge. You may be wondering why this is the case.