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Classifying Matter
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Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Mar 26, 2015

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Connor Poole
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Page 1: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Classifying Matter

Page 2: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Quick Review Those itty bitty particles of matter?

Do you remember their name? The basic building block of all matter?

ATOM

Page 3: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Matter All matter is made of atoms If it has mass and occupies space then it is

matter and made of atoms You, the air, your desk, your book, your pencil,

your dog, your cat, your food, your teacher, your school, the trees, your house, the dirt, rocks, and even the vacuum cleaner that you are supposed to use to clean your room – but never do!

EVERYTHING!EVERYTHING!

(Except Energy)

Page 4: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Classifying Matter Just like the letters of the alphabet are the

building blocks of words – atoms are the building blocks of matter

Atoms are put together to form different types of matter, just like letters are put together to form different types of words

If the matter is made of the same type of atom, it is called an

ELEMENT

If the matter is made of 2 or more kinds of atoms joined chemically, it is called a

COMPOUND

Page 5: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Models of Atoms Since we cannot see an atom, we can use models.

For instance: You will notice that each container only has one

type of particle, or atom Some atoms always have a buddy, some are

loners. These containers contain elements How can you tell?

Page 6: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Models of Compounds

These containers illustrate compounds – 2 or more different atoms, or elements

Atoms aren’t really different colors, but it makes the models easier to understand.

Can you figure out how many different elements are in each container?

Page 7: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Check Understanding

Can you figure out what is in each container?

Look closely. Do you see elements, compounds, or both?

Page 8: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Elements There are 90 naturally occurring kinds

of atoms. These are called elements Scientists in the lab have been able

to make about 25 more (not naturally occurring)

Is there a list or a chart or a table?

OF COURSE

Page 9: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Elements Elements are represented by a

symbol of 1 or 2 letters. The 1st letter is always upper case, the 2nd is always lower case

Some symbols are easy to remember Others not so easy

Page 10: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Compounds Compounds are represented by 2 or

more elements Which box would represent H2O?

CO2?

Page 11: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Element or Compound?

How can you tell if a substance is an element or a compound when written in letters?

Count the number of capital letters! If there is only one – it is an element If there is more than one – it is a

compound Let’s try some…..

PbO2HClH2SO4

Page 12: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Chemical Change How do elements become compounds and

how do compounds become elements? Remember: in a chemical change, new

substances are formed with different properties.

Scientists have a special way of explaining chemical changes. It is called an

EQUATION

Page 13: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Chemical Equations Are Easy!

The reactants are the elements or compounds you begin with

The products are the elements or compounds you end with

The before and after are separated by an arrow.

For instance: Sodium combines with chlorine to produce

sodium chloride, or salt In scientific shorthand it is Na + Cl NaCl

Page 14: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Your TurnWrite a Chemical

Equation Write a chemical equation for each of

these. Indicate which are elements and which are compounds.

Hydrogen (H2) reacts chemically with oxygen (O2) to produce water (H2O)

When the reactants, carbon (C) and oxygen, undergo a chemical change, carbon dioxide (CO2) is produced

Sugar (C6H12O6), with the help of oxygen, is broken down by the body to produce carbon dioxide and water.

Page 15: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Your Turn Again!This equation illustrates a chemical reaction

or chemical change.

Write this equation in words. Indicate what substances reactants, products, elements and compounds.

Page 16: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Remember Elements and compounds can be

represented by symbols or formulas Elements are only one kind of atom, and

compounds are one or more elements or kinds of atoms.

Chemical equations are a scientists’ shorthand for explaining a chemical reaction/change.

When matter undergoes a chemical change, new substances are formed with different properties.

Page 17: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Output Page Idea Like using the letters of the alphabet

to make words, can you use the symbols for the elements to make words?

Use your Try to This can be OOOHH! If have one:

Page 18: Classifying Matter. Quick Review Those itty bitty particles of matter? Do you remember their name? The basic building block of all matter? ATOM.

Questions?