Atoms and Molecules Flashcards
What is matter
Anything that has mass or volume.
Draw a diagram of an atom, and label its parts.
You should have protons, neutrons, and electrons in your diagram.
What is the electric charge of a neutron?
Neutral
What is the electric charge of a proton?
Positive
What is the electric charge of an electron?
Negative
If two electrons were placed right next to each other, what would happen?
They would repel each other.
True or False. An element is matter made of only one kind of atom.
True.
Different elements always have different numbers of _______.
Protons
What is an ion?
An ion is an atom that has an overall charge (either positive or negative) because it has either lost or gained an electron.
What is a molecule?
A molecule is two or more atoms bonded together.
What is a compound?
A compound is a substance made out of two or more elements. It has a specific formula.
Is H20 a compound?
Yes. Because it has a specific formula, 2 Hydrogens and one Oxygen, it is a compound.
What is a mixture?
A mixture is one or more substance that don’t combine to make a new substance. They can have different proportions and still be the same mixture.
What is a Heterogeneous mixture?
A mixture in which you can see all of the different parts. (i.e. a salad)
What is a Homogeneous mixture?
A mixture that is the same throughout. (i.e. mud)
