Unit 1
Unit 2
Unit 3
Unit 4
Vocabulary
100
Tearing foil into pieces is an example of what kind of change?
It is a physical change
100
What is the law of conservation of energy?
Energy can neither be created nor destroyed, but it can be transformed.
100
What is an ionic bond?
A chemical bond formed between metals and nonmetals
100
What is an organic compound?
It is a chemical compound that must have carbon, hydrogen, and possibly other elements.
100
What is an exothermic reaction?
A reaction that lets out energy. An endothermic reaction takes in energy.
200
True or false: Particles only move constantly in certain states of matter.
False
200
What is potential energy?
Potential energy is energy that is stored.
200
Chromium's Atomic Number is 24. How many protons does it have?
24
200
What is the name of a carbon atom with an oxygen atom and then -OH added to it?
It is the carboxyl group.
200
What is the average atomic mass?
The average mass of all of an element's isotopes.
300
When the temperature raises, particles move... (faster or slower)
Faster!
300
What type of energy is stored in a car battery?
Chemical energy is stored in the car battery.
300
Krypton is in group #18. (the very last group) What does this tell you about it?
It is a noble gas.
300
True or false: Carbon atoms can form rings.
True
300
What is a valence electron?
An electron in an atom's outermost energy level
400
What is a homogeneous mixture?
When the components that make the mixture up are evenly distributed throughout the mixture.
400
How are fossil fuels formed?
Over a long period of time, heat and pressure act on layers of sediment and remains.
400
What is a noble gas?
It is a colorless, odorless gas that cannot bond with anything else.
400
What is fusion?
When two nuclei hit each other at very fast speeds and create lots of energy.
400
What is the Kelvin scale?
A temperature scale used by scientist in very cold environments.
500
What is a suspension?
The thickest type of mixture with lots of space between particles. It will eventually settle out.
500
What is conduction?
It is the transfer of energy as heat through a metal.
500
True or false: Protons have the least amount of mass.
False. Protons have the most mass, electrons have the median amount, and neutrons have the least.
500
Where does fission occur?
Fission occurs on the sun. Fusion occurs on the Earth.
500
What is sound energy?
Energy caused by the vibration of particles
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