Chemistry

Boron

Hydrogen + Nitrogen+ Fluorine +Oxygen + Iodine + Carbon + Bromine

Everything that has mass and take up space

Mass refers to the amount of particles an object consists of

the simplest type of chemical substance that can not exist on its own

The smallest particle of matter that can exist on its own

A single kind of matter that can not be separated by any physical means

two or more elements that have been chemically bonded according to a fixed ratio

A group of atoms bonded together that represent the smallest fundamental unit of a chemical compound

Pure Element that forms molecules consisting of two or more atoms bonded together

A material made up of two or more different chemical substances which are not chemically bonded and can be separated by physical means

Iron

Copper

Zinc

Silver

Platinum

Gold

Mercury (liquid at room temp)

Lead

Phophorus

Potassium

Bromine (liquid at room temp)

Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium and Polonium

Manganese

Cobat

Nickel

Helium

Lithuim

Beryllium

Carbon

Hydrogen

• a scale that is a measure of hydrogen ion concentration,

• it is a measure of the acidity or alkalinity of a solution

• Scale 1-14

a substance that will donate protons

lots of hydrogen ions (protons)

A substance that will easily accept a proton

A proton acceptor that is soluble in water

Very willing to give up protons and become completely ionized

• harder to donate a proton

• only ionises partially

• ph 5-6.9

• very willing to accept protons and thus dissociate completely in water especially Group 1

• hydroxide

• ph 10-14

halogens

noble gases

alkali metals

alkaline earth metals

1. A colour change

2. An odour is released

3. Bubbles or frizzing

4. It feels hot (exothermic) or cold (endothermic)

• new product is formed

• old bonds between reactants break and new bonds are formed in their place

• phase change occurs

• molecules remain the same and can return to their original form

• energy is lost to the surroundings

• More energy is given out than what was required to start the reaction

• explosion might happen

• product is much colder than reactant

• more energy is put into reaction than what is put in

• air around the reaction is warm

• energy is taken from the surroundings

• product is much warmer than the reactants

always involves oxygen