VP THE MATTER

THE MATTER

INDEX

Matter: mass, volume and density

Properties of materials

Mixtures

Matter: Physical Changes

Materials

Matter: Chemical Changes

MATTER: MASS, VOLUME AND DENSITY

Matter is a substance made up of various types of particles that occupies physical space and has inertia.

Mass is the amount of matter something contains. Volume is the amount of space and object occupies.Density is the relationship between the mass and the volume of an object.

1. What is the difference between mass and volume? 2. What is more dense, oil or water? 3. What is more dense, cork or oil?

Matter can change state. It can be

MATTER: THE PHYSICAL CHANGES

SOLID

LIQuid

GAS

Melting

Evaporation

Solidification

Condensation

https://www.youtube.com/watch?v=DE3LCPfP8N8

Matter can also change shape.

MATTER: THE PHYSICAL CHANGES

irreversible

reversible

1. Are these changes reversibles? - Cut a sheet of paper into pieces. - Freezing juice. - Cutting bread. - Melting chocolate.

MATTER: THE CHEMICAL CHANGES

Some subtances called reactives are transformed into other different ones called products.

OXIDATIONWhen a subtance combines with oxygen in the air to form other new subtances called oxides.

COMBUSTIONWhen oxidation is very fast with release of light and heat.

FERMENTATIONSome microorganisms produce useful chemical changes.

MATERIALS

A material can be one or more types of matter. Materials have different properties and different uses. They can be natural or manufactured.

They can come from: animals, plants or minerals.

These materials are natural materials which go through a chemical transformation. Can be: plastic, paper, steel.

NATURAL MATERIALS

MANUFACTURED MATERIALS

1. Classify the following materials in your notebook under natural or manufactured. Granite Carton Marble Steel Aluminium Clay Silk Soil Oil Hemp

PROPERTIES OF MATERIALS

COLOUR

RESISTANCE

TERMAL CONDUCTIVITY

HARDNESS

ELASTICITY

SOLUBILITY

The colour of the material depends on the light it reflects and absorbs.

Materials can be easy or difficult to break.

Some materials are thermal conductors. They transfer heat easily. Other materials are thermal insolators, they don´t transfer heat easily.

Hardness refers to how difficult a material is to scratch and change shape.

Some materials return to their original shape after you strech them and other do not.

Some materials are soluble. This means they dissolve in liquids. Insoluble materials, do not dissolve.

1. What properties do the following materials have? - Wood - Paper - Plastic - Crystal

MIXTURES

Matter can be pure substance or mixtures.Pure substance consist of only type of matter (gold, silver, oxygen...).Mixture is made up of two of more substance (salad, sand, coffee...).

HOMOGENEOUS MIXTUREYou can´t see the differents elements, and it is not always possible to separate them.

HETEROGENEOUS MIXTUREThe differents elements are visible and you can separate them easily.

TYPES OF MIXTURES

1. What is the difference between heterogeneous and homogeneous mixtures? Give three examples of each.

SEPARATING MIXTURES

Some mixtures are more difficult to separate and require the correct method.

EVAPORATIONWe use to separate solids dissolved in liquids

FILTRATIONWe use to separate solids from liquids or from gases

DECANTATIONWe use to separate liquids from solids or from liquids with different densities.

1. What method would you use to separate the following mixtures? a. Water and oil. b. Water and rocks. c. Water and salt. d. Water and sand.

THE MATTER

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Trabajo realizado por:CAROLINA TORRECILLADIANA DOMÍNGUEZROSANA IBAÑEZ

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