Classification Of Matter
This is when matter only has one set of chemical and physical properties
What is a pure substance?
The 7 horizontal rows on the periodic table
What is a period?
This element has a yellowish colour and the chemical symbol is Au
What is gold?
The smallest unit of a substance that retains properties
What is an atom?
What is group 18?
This is when matter can be seperted physically
What is a mixture?
The 18 vertical columns on the periodic table
What are groups?
This element is a metal, has a silverish-grey colour and the chemical symbol is Fe
What is iron?
All matter is made up of this
What are particles?
The group that halogens are in
What is group 17?
This is when matter has an uneven distribution of substances and you can see the different parts
What is a heterogenous mixture?
This group is silver-grey in colour, highly reactive with water and air, all metals and only one valence electron
What are alkali metals?
This element is the second on the periodic table and is part of the noble gasses
What is helium?
____ can be joined together to form particles
What are atoms?
The mass number represents the total number of protons and ____
What are neutrons?
This is when the matter has evenly mixed substances and you cannot see the different parts
What is a homogenous mixture?
This group on the periodic table is very reactive with water and air, all metals and only 2 valence electrons
What are alkaline earth metals?
This is the first element on the periodic table and the chemical symbol is H
What is hydrogen?
When particles are closer together their ______ is stronger
What is attraction?
The type of element is determined by ______ __ _____
What is the number of protons?
This is when a substance is only made up of one type of atom and cannot be seperated
What is a element?
The group where its all non metals, highly reactive and only 7 valence electrons
What are halogens?
The element often found in bannanas
What is potassium?
There are tiny ____ bewteen particles
What are spaces?
The number of protons an atom has in its nucleus
What is the atomic number?