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Los Olivos 3rd Course NS Unit 5 Matter
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What kind of mixture is this?
A fruit salad is a heterogeneous mixture (we can see the different fruits).
What kind of mixture is this?
Pasta with tomato sauce (and pasta in the boiling water) is a heterogeneous substance (we can see the different components)
What kind of mixture is this?
This smoothie is a homogeneous mixture (we can't see the different components)
What kind of mixture is this?
A salad is a heterogeneous mixture.
Say 4 things you can do to reduce waste:
Take your bags when you go shopping, write on both sides of the paper, recycle and reuse.
What is e-waste?
Waste from electronic devices: mobile phones, DVDs, TVs and computers, which have toxic substances.
What is non-recyclable waste?
Waste that can't be made into new objects (can't be recycled): plastic bags, nappies and facemasks, that pollute the water
What is recyclable waste?
Waste made of materials that can be made into new objects (recycled): cans, plastic bottles, newspapers, glass, cardboard...
What is organic waste?
It's the waste that comes from plants and animals and is biodegradable: bacteria and other living things decompose it.
What are the four types of waste?
Organic, recyclable, non-recyclable and e-waste.
What is waste?
It's all the rubbish we throw away.
Complete: Filtration separates _______________ mixtures. For example, we can separate sand and water pouring the mixture through a ___________.
heterogeneous; filter
Complete: Evaporation separates _______________ mixtures. For example, we can separate salt and water making __________ evaporate.
homogeneous; water
We can separate mixtures with two methods. What are they?
Evaporation and filtration
What is a homogeneous mixture?
It's a mixture where we CAN'T see the different substances separately and it looks the same. For example, when we put sugar in orange juice.
What is a heterogeneous mixture?
It's a mixture where we CAN see the different substances separately. For example: a fruit salad in which you can see the different fruits.
What two types of mixtures are there?
Heterogeneous mixtures and homogeneous mixtures.
What is a mixture?
It's a substance that happens when we put two or more substances together. For example: yoghurt with sugar or chocolate milk.
What type of substances are silver, water, salt or wood?
They are pure substances.
What is a pure substance?
It's a substance that consists of only one component. For example: silver, water, salt or wood.
What do we call the energy exchanged between two objects at different temperatures?
It's heat
What is heat?
It's the energy exchanged between two objects at different temperatures.
True or False: When water is in solid state it contracts to occupy less space.
False. Water expands when it becomes ice! And it can break its container!
True or False: When water is in solid state it expands to occupy more space.
True
What happens to water at temperatures below (under) 0ºC?
It's in solid state (ice or snow).
What happens to water at temperatures between 1ºC and 99ºC?
It's in liquid state (liquid water)
What happens to water at temperatures over 100ºC?
It is in gas state (water vapour or steam).
What happens when you cool down water vapour or steam?
It condenses and turns into liquid water.
What happens when you cool down liquid water?
It freezes and turns into ice (solid water).
What happens when you heat liquid water?
It boils and evaporates, it turns into steam or water vapour.
What happens when you heat ice (solid water)?
It melts and turns into liquid water.
In what states can we find water?
Solid (ice), liquid (liquid water) and gas (steam or water vapour)
Guess the substance: It's odourless, colourless and tasteless.
It's water.
What are three properties of water?
It's odourless, colourless and tasteless.
What does the O in H2O stand for?
It stands for Oxygen.
What does the H in H2O stand for?
It stands for Hydrogen.
What is water made of?
It's made of hydrogen and oxygen (H2O)
Guess the property of matter: It's the mass of a substance divided by its volume.
Density
What is density?
It's the mass of a substance divided by its volume.
What is volume?
It's the space matter occupies.
What is mass?
It's the amount of matter.
Guess the property of matter: It's the amount of matter. It's measured in units like grams or kilograms.
Mass
Guess the property of matter: It's the space matter occupies.
Volume
What are the properties of solids?
They have their own shape and always occupy the same amount of space
What are the properties of liquids?
they take the shape of the container they are in and always occupy the same amount of space
What are the properties of gases?
they take the shape of the container they are in and expand to occupy as much space as possible
Guess the state of the matter: they take the shape of the container they are in and expand to occupy as much space as possible
Gas
Guess the state of the matter: they take the shape of the container they are in and always occupy the same amount of space
Liquid
Guess the state of the matter: They have their own shape and always occupy the same amount of space
Solid
Which of these objects are gas? orange juice, smoke, garage door, fizzy drink, air, book
smoke and air
Which of these objects are liquid? orange juice, smoke, garage door, fizzy drink, air, book
orange juice and fizzy drink
Which of these objects are solid? orange juice, smoke, garage door, fizzy drink, air, book
garage door and book
Which of these objects are natural? Paper, water, wood, rubber, plastic, rocks
water, wood and rocks
Which of these objects are man-made or artificial? Paper, water, wood, rubber, plastic, rocks
paper, rubber and plastic
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