STATES OF MATTER
What are the different states of matter?
Solid, liquid, gas.
True or False: Raw materials are found in nature.
True.
Give me an example of a flexible item.
Rubber, plastic ruler, etc.
What are the two types of forces?
Contact and non-contact forces
From a solid to a liquid is called.....
Melting.
Matter is made up of what?
Atoms.
Tell me one example of a raw material and one example of a man-made material.
Raw: honey, wool, etc.
Man-made: paper, wood, rubber, etc.
True or False: Sand is soluble.
False. Sand is insoluble because it is tiny rocks and rocks are insoluble.
What two forces are involved in knocking a pencil case of the desk and it falls to the ground?
Push (and pull) and gravity.
Materials which are difficult to bend are called _______________.
Rigid.
What is it called to go from gas to liquid?
What are the 3 main things we get materials from?
Ground, Animals, Plants.
Metal is an ____________ material.
Inelastic.
Non-contact forces are also known as what? and why?
Invisible forces because you cannot see them and they do not need contact to happen.
True or False: the more mass something has, the stronger its force of gravity is.
True.
When the temperature increases, the atoms move __________ together, or __________ apart.
closer together or further apart.
We get milk from cows and silk from....
Silkworms/worms.
Materials which are difficult to break are ________________ and materials which are easy to break are ________________.
Difficult to break ---> resistant
Easy to break ---> fragile
Describe friction.
Friction is a force that stops things from moving or slows them down.
example: a book on a table does not move far.
Name 2 things that are recyclable.
Glass, paper, aluminum, etc.
When you boil a pot of water, what happens?
The water begins to evaporate.
Raw materials that come from living things are naturally ______________, but the ones from the ground cannot be.
Replaced.
Describe what an insulator is.
An insulator (conduction) is when materials do not let heat or electricity travel through them easily.
Give me 1 example of each force (both contact and non-contact). There should be 5 total.
Friction: a book on a table, etc.
Push and Pull: a door, etc.
Changing shape: a squishy, etc.
Gravity: leaves falling to the ground from a tree, etc.
Magnetism: a needle in a compass pointing north, etc.
Can you same the materials of a sweater?
soft, elastic, flexible