States of Matter
These are the four states of matter, listed in order from least amount of energy to most amount of energy.
What is: Solid, liquid, gas, plasma
The change in state from a solid to a liquid.
What is melting?
Any change in matter that produces one or more new substances.
What is a chemical change?
This is what the law of conservation says about the mass of a chemical reaction.
What is mass is never lost or gained, it just gets rearranged?
Solve the following equation:
___NaCl ---> ___Na + ___Cl2
What is 2NaCl ----> 2Na + Cl2?
Atoms in a ___________ are packed tightly together and vibrate in place.
What is a solid?
The change in state from a gas to a liquid.
What is condensation?
Water evaporating is an example of what type of change?
What is a physical change?
Elements and molecules located on the left side of the arrow. What you start with at the beginning of a chemical reaction.
What are reactants?
Solve the following equation:
___K + ___Cl2 ----> ___KCl
What is 2K + Cl2 --->2KCl?
The atoms in a _______ are full of energy and move outward in all directions, independent of each other.
What is a gas?
When a substance goes from a liquid to a gas, thermal energy must be __________.
What is added?
A glowstick glowing in the dark is this type of change.
What is a chemical change?
BIG numbers in front of a chemical formula. Added to balance chemical equations. Tell us how many copies of that molecule are present.
What are coefficients?
Solve the following equation:
___Na + ___HCl ----> ___H2 + ___NaCl
What is 2Na + 2HCl ---> 2NaCl
Atoms in a _______ can slide past each other.
What is a liquid?
The change in state from a solid directly to a gas.
What is sublimation?
Making fake snow using polyacrylate is this type of change.
C3H3NaO2 --> C3H3NaO2
What is physical change?
You CANNOT add, remove, or change these in order to balance a chemical equation.
What are supbscripts?
Solve the following equation:
___KClO3 ---> ___KCl + ___O2
What is 2KClO3 --->2KCl + 3O2
The sun is an example of this state of matter.
What is plasma?
All phase changes are _______. (physical or chemical changes)
What is physical changes?
Water boiling on the stove is this type of change.
Chris split water apart into hydrogen gas and oxygen gas in an open beaker. He didn't understand why mass wasn't conserved (the mass decreased). What explains it?
2H2O --> 2H2 + O2
What is...
If the chemical reaction occurred in an OPEN beaker, the gases escaped into the air, decreasing the mass.
Solve the following equation:
___SeCl6 + ___O2 ---> ___SeO2 + ___Cl2
What is SeCl6 + O2 --->SeO2 + 3Cl2