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Elements and their Combinations

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Presentation on theme: "Elements and their Combinations"— Presentation transcript:

1 Elements and their Combinations
Unit D Elements and their Combinations

2 What is matter? Something that has mass and takes up space
Something that is important Something that is a problem Something that takes up no space and is invisible

3 What is matter made up of?
Organs Cells Atoms Links

4 Which element is a metal?
Oxygen Gold Carbon Helium

5 Which is NOT a property of a metal?
Shiny Can bend Melts easily Gets hot

6 What is the smallest number of parts in a compound?
1 2 3 4

7 You can see an atom with Your eye A special telescope
A magnifying glass A special microscope

8 Atoms may combine to form a(n)
Mixture Molecule Nucleus Element

9 What does periodic mean
Happening sometimes Happening all the time Happening at regular times Happening at the end

10 What element is a building block of matter in living things?
Carbon Hydrogen Helium Oxygen

11 Which one of the following is NOT one of your senses?
Hearing Sight Touch Thinking

12 Which group lists the physical properties of materials?
Shape, color, ability to float Smell, density, ability to rust Color, texture, ability to burn Taste, texture ability to rust

13 Which is an example of a chemical change?
Cutting paper Making ice Burning wood Boiling water

14 A compound is made up of An element Different kinds of atoms
The same kind of atom Salt and water

15 Water is a Compound An element A mixture A solution

16 What will happen in this beaker?
Nothing The water will boil The water will disappear The sugar will dissolve

17 The temperature at which a solid changes to a liquid is called the
Boiling point Celsius scale Fahrenheit scale Melting point

18 Some foods taste because they contain a type of chemical called an acid. Which food contains acid?
Ice cream Lemons Peas Chicken

19 What is NOT a property of salt?
It is white It is made of tiny crystals It tastes sour It mixes in water

20 The amount of space an object takes up is called its
Temperature Mass Volume Shape

21 Which kind of substance has no definite shape and probably a large amount of space between its particles? Solid Liquid Gas Water

22 Which substance has no definite shape but has a definite volume?
Iron fillings Liquid water Nitrogen gas Salt crystals

23 The process of liquid water changing to a gas is called
Freezing Precipitation Melting Vaporization

24 Which is a property of glass?
It is clear It can bend It is soft It is a liquid at room temperature

25 Chocolate milk is A chemical A compound A mixture A reaction

26 Hydrogen combines with oxygen to make water
Hydrogen combines with oxygen to make water. A scientist calls the hydrogen and oxygen Ingredients Reactants Products Energy

27 A difference between a physical change and a chemical change is that in a chemical change
A new substance forms No new substance forms Only the shape of the substance changes Only the size of the substance changes

28 What do solids, liquids, and gases have in common?
They can be squeezed to take up less space People can see them They have shape They are made up of particles

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