TEACHER: SARA PASCUAL U. 5 MATTER and MATERIALS

MATTER

PROPERTIES OF MATTER MASS: is the amount of matter that exists in an object. We measure it in grams (g) or kilograms (Kg) VOLUME: is the space that an object takes up. We measure it in litres (l)

TYPES OF MATTER

1) PURE SUBSTANCE HETEROGENEOUS HOMOGENEOUS Consists only of one We can distinguish the We cannot distinguish compound. compounds. the compounds. 2) MIXTURE Consists of two or more compounds.

SOLID LIQUID GAS STATES OF MATTER

Changes in matter CHEMICAL CHANGE: new matter is formed. For example: wood is changed into smoke and ash. PHYSICAL CHANGE: the mass and volume don’t change.

CHANGE OF STATE MELTING EVAPORATION SOLIDIFICATION CONDENSATION SOLID LIQUID GAS SOLIDIFICATION CONDENSATION CHANGE OF STATE

Materials We classify materials into two types: NATURAL MATERIALS and ARTIFICIAL MATERIALS.

They come from living things like animals and plants NATURAL MATERIALS ANIMAL ORIGIN PLANT ORIGIN MINERAL ORIGIN Leather, silk, wool Wood, cork, cotton Iron, marble, clay They come from living things like animals and plants

ARTIFICIAL MATERIALS Wood from trees – Paper Oil from underground - Plastic They are created by transforming natural materials into different things.

PROPERTIES OF MATERIALS CONDUCTS HEAT TRANSPARENT ELASTIC

PROPERTIES OF MATERIALS IMPERMEABLE STRONG FLEXIBLE

MATERIALS AND THEIR USES can be strong and hard and elastic and impermeable strong smooth

Glass is transparent. Bricks and tiles are Electric lines are Cotton, wool and Windows are made made from clay. made of plastic and leather are used of glass. wood. to make clothes and shoes. HOW MATERIALS ARE USED?

Concrete is made from Polyester is used to Asphalt is used to make cement, sand and rock. make clothes. roads. We use it to made roads. HOW MATERIALS ARE USED?

MATERIALS AND THE ENVIRONMENT We can help our environment by following the 3Rs: Reduce: finish all the pages of your notebook. Reuse: you can use a showbox to coloured crayons. Recycle: separate your waste into glass, plastic and paper.

QUESTIONS

Look at these objects. Which has a greater mass? Which has a greater volume?

Match the objects to their properties. Strong, hard, conducts heat Transparent, water-resistant, does not conduct heat Strong, flexible, elastic Plastic cup Fork T-shirt

Complete the paragraph with the words below. Litres Volume Scales Kilograms Matter Mass …………… has mass and volume. …………. is the amount of matter in one object. ………….. is the space that an object takes up. Mass is measured in …………… and volume is measured in ……………. We use …………… to measure the mass of an object.

Look at these pictures. Which one is a homogeneous mixture and which one is a heterogeneous mixture? Explain your answer.

Classify every natural material in the right column. ANIMAL ORIGIN PLANT ORIGIN MINERAL ORIGIN Silk Cotton Leather Clay Wood Cork Marble

CHANGES OF STATE How are they called? Gas changes to liquid: _ _ _ _ _ _ _ _ _ _ _ _ Solid changes to liquid: _ _ _ _ _ _ _ Liquid changes to solid: _ _ _ _ _ _ _ _ _ _ _ _ _ _ Liquid changes to gas: _ _ _ _ _ _ _ _ _ _ _

Make a list of the different materials in the picture. Are they natural or artificial?

Which materials are these objects made of?