A molecule is made up of at least this many atoms.
What is two
100
Name the three states of matter.
What are solid, liquid, and gas?
100
What two things change about the molecules when heat is added or taken away?
What is are the speed and spacing of the molecules?
100
This is a solid in which the molecules are in a tight, orderly, repetitive pattern.
What is a crystal?
200
The three parts of the atom are what. Please include their charges.
What are protons (positive), neutrons (neutral), and electrons (negative).
200
These are the two types of molecules.
What are compounds and elements?
200
The molecules in this state of matter are tightly packed together. It can hold its own shape.
What are solids?
200
As heat is added, this happens to the molecules.
What is the molecules speed up and the spaces increase.
200
These are the states of matter changes going to and from a liquid to a gas.
What are evaporation (liquid to gas) and condensation (gas to liquid)
300
These are the two parts of the atom that make up the nucleus.
What are protons and neutrons.
300
Explain what a compound is.
A compound is a molecule made up of two or more different atoms.
300
This state of matter takes the shape of its container and the molecules are close together but free to more around
What is a liquid?
300
This happens to the molecules as heat is taken away.
What is the molecules slow down and spaces decrease?
300
What it is called when molecules break apart in water to form a solution?
What is dissolve?
400
Explain what makes all atoms unique.
What is they all have different numbers of protons, neutrons, and electrons.
400
Explain what an element is.
An element is a type of molecule that consists of only one type of atom.
400
This state of matter fills the shape of its container and molecules move around very fast
What is a gas?
400
These are the two states of matter changes when going to and from a solid to a liquid.
What are melting (solid to liquid) and freezing (liquid to solid)
400
This is the temperature at which a solid begins to become a liquid?
What is the melting point/
500
The atomic number of Potassium is 19 and its atomic mass is 39. Find the number of protons, neutrons, and electrons.
There are 19 protons, 19 electrons, and 20 neutrons.
500
An element can exist in these two forms.
What are as a molecule or as a single atom?
500
Explain how the states of matter can change.
States of matter change when adding heat or taking away heat.
500
You take a bottle full out of water out of a freezer and leave it on the counter. The bottle has never been opened. After five minutes you come back and there is water on the outside of the bottle and on the counter. Where did the water come from?
It came from a gas in the air that condensed onto the cold bottle. The cold bottle made the gas in the air condense onto the bottle.
500
This is the temperature at which a liquid starts to become a gas.