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Laabri

S3W2 Elements, compounds and molecules

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Last updated 10 months ago
11 Nsɛmmisa
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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

watch this video. do you have any questions?

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

match the vocabulary with their definitions

Draggable itemarrow_right_altCorresponding Item

atomic number

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an organized chart of all known elements, arranged by their properties and atomic structure

molecule

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the smallest particle of an element that maintains all properties of that element

Chemical symbols

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two or more atoms bonded together

atom

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A substance made of one type of molecule, where that molecule is made up of two or more different types of atoms

element

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forces that hold atoms together in molecules

periodic table

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a pure substance made up of only one type of atom

compound

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the number of protons in an atom's nucleus, which determines what element it is

bond

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the one to two letter abbreviation for an element

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

A chemical formula for an molecule will tell you a couple things. To start with - it will tell you have types of atoms are in the molecule. To do this it will use each type of atom's chemical symbol. There will also be a subscript number that will tell you how many of that atom there will be. So H_2O is a chemical formula for water. There are two Hydrogens (H) and one oxygen (no need for a subscript if there is only one). How many atoms total are in the H_2O_2 molecule?

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Sometimes you will see a number in front of a chemical formula. Like this -

that just tells me you have three of the same kind of molecule. If I have 3Fe_2O_3, how many oxygen atoms do I have total?

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Sort the following as either an ELEMENT or a COMPOUND

  • Oxygen =O_2

  • Water = H_2O

  • Gold = Au

  • Sugar = C_{12}H_{22}O_{11}

  • ELEMENTS

  • COMPOUNDS

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

If you are not in 8th grade or honors you can be done. If you aree 8th grade or honors, continue here. Watch this video:

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

Which element is a noble gas commonly used in balloons?

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8.

In the Periodic Table, the vertical columns that extend up and down the Periodic Table are called

Asemmisa {{asɛmmisaAhyɛnsode}}
9.

What makes Noble Gases unique?

Asemmisa {{asɛmmisaAhyɛnsode}}
10.

Draggable itemarrow_right_altCorresponding Item

blue hexagon

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element symbol

red star

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element name

Green square

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atomic number

purple oval

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mass number

Asemmisa {{asɛmmisaAhyɛnsode}}
11.

What would be something about the organization of the periodic table that you would be comfortable explaining in class?