Atoms/Elements
Periodic Table
What are the two characteristics of a mixture?
They have to have 2 or more atoms
They can have the same of different elements
When a liquid turns into a solid, that is called ___________.
When a solid turns into a liquid, that is called ____________.
Freezing
Melting
What is the density formula
D = m/v
The basic building blocks of matter
What are the three subatomic particles that make up an atom? What are their charges?
Proton-Positive
Neutron-No charge
Electron-Negative
Compound because there are two different elements in salt.
What are the two ways liquid can change into a gas? How long do each of these take?
Evaporation- slowly
Boiling-rapidly
What is the abbreviation of an element called? Give me an example.
Chemical Symbol. Oxygens is "O"
The measure of the gravitational force on an object.
Weight
What tells me how many protons there are in an element?
Atomic number
What are the two characteristics of a compound?
They have two or more atoms
They have different elements
When water vapor turns into water, what is the name of that process?
Condensation
If a rock has a mass of 115g and a volume of 5mL, what is the density?
23g/mL
The measure of the amount of mass in a given volume
Density
Where are protons, electrons, and neutrons located in an atom?
Protons and neutrons are located in the nucleus, electrons are located in shells on the outside of the atom.
What are the two characteristics of a molecule?
Two or more atoms
The same element
When dry ice turns directly into water vapor, what is that process called?
Sublimation
Energy cannot be __________ or ___________, it can only be ____________.
Energy cannot be CREATED or DESTROYED, it can only be CHANGED.
A compound or molecule that has a definite physical and chemical properties.
Pure Substance
In sugar C6H12O6 How many elements are there? How many atoms?
Atoms- 24
Explain the two types of mixtures.
Homogenous- Mixture that is evenly spread throughout
Heterogeneous- Mixture that is not evenly spread throughout or does not mix at all
When water vapor turns directly into ice, what is that process called?
Deposition
What are the definitions of physical and chemical property?
Many ways to say it
Explain the terms Sublimation and Deposition
Sublimation- When a solid turns into a gas
Deposition- When a gas turns into a solid