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English 15 Public

Matter and energy

Study Slideshow

Matter is anything that has volume, but not mass. True or False?

False. Matter has volume and mass.

Mass tells us... a) how much matter is in an object b) the space an object occupies.

A) Matter tells us how much matter is in an object.

Mention the 3 states of matter.

Solid, liquid and gas.

Solids have got a fixed shape and a fixed volume. True or false?

True

Liquids have got a fixed shape and a fixed volume.

False. Liquids haven't got a fixed shape.

Gases haven't got a fixed shape and a fixed volume.

True

Hardness determines the resistance that an object has to be... a) scratched b) broken

a) scratched

Elasticity determines how easily something recovers its original shape when it is deformed. True or false?

True. For example a hair band.

Honey has more viscosity than water. True or false?

True. The viscosity is the resistance of a liquid to flow.

Which state of matter can be compressed more easily? Solid, liquid or gas?

Gas.

Define "pure substance". Give me 2 examples.

A pure substance is made up of only one type of matter. For example: sugar, salt, water.

Tell me the difference between "heterogeneous mixtures" and "homogeneous mixtures" using an example.

In the heterogeneous mixtures you can see the different types of matter (pizza), but in the homogeneous mixtures you cannot (milkshake).

Natural materials can be found in the nature and their origin can be... (there are 3).

Animal, vegetable (plant) and mineral origin.

Physical changes produce new substances. True or false?

False. Physical changes affect the state, position and shape of matter.

Give me 3 examples of physical changes and 3 examples of chemical changes.

Physical changes: when ice melts, when you make something with plasticine. Chemical changes: when you cook food, when food spoils.