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PT

Brian Lawson

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1.A Group is a column of elements in the periodic table .
5.A Chemical Change takes place when two or more substances ineract to form different substances with different properties .
7.me Elements , however , display properties of both metals and non-metals.
8.Atom of different elements may join together chemically to form a Compound .
9.The NOble Gases are odorless and colorless , and they do not react easily with other elements .
12.an Element is the simplest form of matter and is made of the same type of atoms.
13.Is a way of expressing the numbers and types of atoms in a compound .
14.The Number Of Protons in an atom of an element is known as that element's Atomic Number
15.Metals generally have the properties of conductivity
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2.A Russian scientist named dmitri mendeleev created a chart in 1869.
3.Non-metals in general are poor conductors of heat and electricity .
4.A Period is a row of elements in the periodic table.
6.When hydrogen and oxygen atoms combine to form water , they undergo a Chemical Change .
10.A combination of two or more atoms is called a Molecule
11.A Border Discription of Elements .

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