EXTRA KINETIC THEORY QUESTIONS!!!!!
Types of Matter 1
Types of Matter 2
Properties of Matter 1
Properties of matter 2
100
Why does plasma not exist on Earth?
It's too hot.
100
How many elements occur naturally?
~90
100
What is a compound?
Pure substance in which the atoms of two or more elements are chemically combined in a fixed proportion
100
What are characteristic properties of matter?
Properties that are always unique to an individual element or compound.
100
If you hold a bonfire with lots of friends and you start with 100kilograms of wood at the beginning of the night, how much matter is left after the bonfire?
100kg. Law of Conservation of mass.
Even though the wood might have burned into ash and smoke, the total amount of matter remains the same.
200
What is the difference between evaporating and boiling?
Both are forms of vaporization but evaporating only occurs at the surface of liquids at any temperature but boiling occurs throughout a whole liquid at a very specific temperature.
200
What are the two types of pure matter?
Elements and Compounds.
200
Which of the following is a colloid?
Water
Sand in Water
Paint
Paint
200
What are three examples of characteristic properties of matter?
Color, Solubility, Density, Melting point, Freezing point, Boiling point, etc.
200
What are two examples of physical properties?
Color, density, elasticity, melting point, freezing point, boiling point, condensing point, sublimating point, depositing point, etc.
300
What happens to particles when a liquid turns into a solid?
The particles lose energy/heat and slow down causing the liquid to turn into a solid.
300
Why don't we see many naturally occurring elements in our everyday lives?
Most combine into compounds.
300
What is an Element?
Pure substance made up of atoms that are all alike.
300
Do mixtures have characteristic properties? Explain your answer.
No, their characteristics are defined by the pure substances that make them up.
300
What are two examples of chemical properties?
Reactivity, flammability, oxidation states, toxicity, etc.
400
What happens to particles when a substance goes from a solid to a liquid?
The particles heat up causing them to move faster which causing the solid to turn into a liquid.
400
What does it mean when we say a compound has a fixed composition?
It means compounds are made of specific amounts of atoms of elements. Ex. H2O is water. The moment you add anything to it, it becomes an entirely different compound (H2O2 is hydrogen peroxide).
400
Which of the following is a suspension?
Water
Sand in water
Paint
Sand in water
400
What is a physical property?
Any characteristic of a material that you can observe without changing the identify of the substance
400
What is a chemical property?
Any characteristic of a material that you can observe and that produces one or more new substances
500
How does particle motion relate to temperature?
The higher the temperature the faster particles move.
500
Come up to the board and draw an accurate matter chart.
500
What is a mixture?
Matter composed of two or more substances that can be separated by physical means.
Not chemically combined.
500
What is a physical change?
A change in size, shape, or state of matter in which the identity of the substance remains the same.
500
What is a chemical change?
A change of one substance to another is a chemical change.