Atoms are the building blocks of everything. everything and anything is made up of an atom.
The atoms consiss of the nucleas and the shells
The nucleas contains protons and neutrons. protons(positive charge) and neutrons (neutral charge).
The nucleas is in the middle of the charge. the whole mass is concentrated in the nucleas.
The electrons move around the nucleas and shells..
Elements consist on only 1 type of atom
The number of protons in the nucleas tells us what type of atom it is.
Compounds consist of 2 or more elements chemically combined.
Mixtures are substances that are composed of either elements, molecules or compounds that are not chemically joined or combined.
If a substance contains only 1 type of atom it's called an element.
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periodic table. compounds and mixtures. balancing
the periodic table is what helps us to determine elements. it is split into metals and non-metals. It is a table which contains all the elements of the known world. it is separated in groups and periods. a group is a vertical column. A period is a horizontal row.
the periodic table consists of 8 groups. group 1 is the alkali metals, group 2 is the alkali earth metals. between groups 2&3 are the big block of metals called the transition metals. group 7 is the halogens and group 8 or 0 is the noble gases.
atoms join together to make compounds. making bonds involves atoms sharing electrons. e.g. carbon dioxide CO2 is a compound. carbon and oxygen combine.
mixtures are easily separated. there is no chemical bond between them. they can be separated by physical methods such as distillation.
atoms/elements must be equal on both sides. you must get the formula correct first. state symbols. either solid(s) liquid(L) gas(g) or aqueous(aq)
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