Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
L1 Acids and Bases
Definitions for AS90944
| Term | Definition |
|---|---|
| Acid | A substance that is able to donate a hydrogen ion (proton). |
| Atom | The smallest particle of an element. |
| Atomic number | The number of protons in the nucleus of an atom. |
| Mass number | The number of protons plus the number of neutrons in the nucleus of an atom. |
| Base | A substance that is able to accept a hydrogen ion (proton). A basic solution contains hydroxide ions (OH-). |
| Alkali | A base that is soluble in water |
| Charge | The amount of electricity on a particle – positive or negative. |
| Proton | Positively charged subatomic particle found in the nucleus of an atom. |
| Neutron | Neutral subatomic particle found in the nucleus of an atom. |
| Electron | Negatively charged subatomic particles found moving rapidly around the nucleus. |
| Electron Arrangement (configuration) | The position of the electrons in the energy level around the nucleus |
| Antacids | Substances that are taken to relieve stomach acidity. |
| Metal salts | Ionic compounds except oxides or hydroxides. |
| Element | A substance which is composed of only one type of atom. |
| Compound | A substance which is composed of two or more different types of atom chemically bonded. |
| Isotopes | Atoms with the same number of protons but different numbers of Neutrons. |
| Particles | Atoms, molecules or ions. |
| Ion | Atoms or groups of atoms which have lost or gained electrons to become a charged particle. |
| Ionic bonding | Strong electrostatic attraction between positive and negative ions to form a large 3D network. |
| Ionic compound | Substance composed of oppositely charged ions (metal with non-metal) |
| Formula | Symbol representation of the atoms present in a substance. |
| Symbol Equation | Symbol representation of the reactants and products of a chemical reaction. |
| Word Equation | Word representation of a chemical equation. |
| Metal oxide | Ionic substance consisting of a metal and oxygen. (eg MgO) |
| Metal hydroxide | Ionic substance consisting of a metal and hydroxide ions. (eg NaOH) |
| Metal carbonate | Ionic substance consisting of a metal and carbonate ions (eg CaCO3 ) |
| Metal bicarbonate | Ionic substance consisting of a metal and a hydrogen carbonate ion. ( eg NaHCO3 ). |
| Indicator | Substance that changes colour in the presence of acid or base. |
| Litmus | Red litmus- acid → red Red litmus – base →blue; Blue litmus- acid →red Blue litmus – base →blue. |
| Universal indicator | Mixture of indicators that change colour at different pH’s. pH 1→→→→→→→→→→→→→→→→→→→→→→→14; red →orange→yellow→green→lilac →blue →purple. |
| pH | A number that represents the concentration of the hydrogen ions in a solution. |
| pH scale | A scale formed from the pH of different solutions. |
| Neutral | Having a pH of 7, ie neither acidic nor basic. |
| Neutralisation | Making an acidic solution less acidic or a basic solution less basic. |
| Monoatomic ions | Ions with only one atom. |
| Reaction rates | The speed at which a chemical reaction occurs. |
Created by:
kjsime
Popular Chemistry sets