Normal Size Small Size show me how
Physical and Chemical Changes
|What happens when water boils?
|The liquid water becomes a gas
|If a chemical change happens, what observations might you see?
|Change in color or odor
|If a physical change happens, what observations might you see?
|Change in size or shape
|What happens to a sugar cube that is placed into a cup of hot water?
|Materials combine to create a new compound:
|Materials mix, but a new compound is not made:
|What are the 3 States of matter?
|Solid, liquid and gas
|Anything that has mass and takes up space is know as:
|Ice melting is a chemical change (T/F)
|Baking powder fizzing is a chemical change (T/F)
|Salt added to water is a physical change (T/F)
|What is solid water?
|What is produced when water is boiled?
|Steam (Water in the form of a gas)
|Water at room temperature is a liquid (T/F)
|Which of these 2 liquids is a mixture, made of parts that can be separated by filtration? (Distilled water, orange juice, milk, salt water, sugar water)
|salt water and sugar water
|Physical changes change the matter into something completely different. T/F
|Physical changes begin and end with the same compounds
|You can filter salt out of water by pouring the solution through filter paper, but what is the BEST and most efficient way to separate the salt from the water?
|Heat the solution to boiling and evaporate off the water
|How can you change ice to liquid water?
|To make something warmer
|To make something colder
|Molecules move faster as heat is increased T/F
|Burning wood and turning into ask in a fireplace is know as a mixture. (T/F)
|When wood burns there is a size, shape and color change. There is gas (smoke) and a smell involved. These are clues that help you to know that a ______________ change took place.
|Rocks, shells and other particles are mixed together to form soil. This is an example of a ____________
|Mass, volume, shape, size, density and color are examples of:
|Properties of matter
|How tightly packed particles are in an object
|If an object floats, it is ________ dense than the water
|If an object sinks, it is ________ dense than the water
|Amount of space an object takes up is known as:
|The pull of gravity on an object is known as:
|The amount of matter inside an object is known as:
|When a solid changes to a liquid, It's called the _________ point.
|When a liquid changes to a solid, it is called the ________ point.
|When a liquid changes to a gas, it is called the ________ point.
|When a liquid changes to a gas without boiling, it is called ________
|When a gas changes into a liquid (drops of water), it is called ________