What holds the earths atmosphere in place?
Gravity
What is an Atom?
The smallest particle of an element maintaining the chemical identity of that element.
Scientists arrange all of the elements in order by what?
Number
What is the solid part of the Earth?
Helium is a what?
Element
What is mass a measure of?
How much matter is in a substance
What is a pure substance made of two or more kinds of atoms bound together
Compound
Name a non metal
**Either of these**
H, C, N, O, P, S, Se
What is all living things?
An Element is....
a pure substance that cannot be broken down into different substances.
Which one of these is a compound?
a. oxygen
b. water
c. copper
b. water
What is matter?
anything that has mass and takes up space. (Solid, Liquid, Gas)
Name an other metal
**Either of these elements**
Al, Ga, In, Sn, Ti, Pb, Bi
Hydrosphere
Water is....
A compound made of hydrogen and oxygen.
What are the two main elements found in lithosphere?
oxygen and silicon
All the water on the Earth. Oceans, ground waters, glaciers, etc.
Hydrosphere
**Either one of these**
Be, Mg, Ca, Sr, Ba, Ra
What is all the air?
Atmosphere
a compound is
formed when two or more elements combine chemically.
What is the definition of matter?
Anything that has mass and takes up space.
What are properties?
physical and chemical characteristics of matter used to describe or identify a substance.
Name a Noble Gas.
**Either one of these**
He, Ne, Ar, Kr, Xe, Rn
Name the most abundant elements in Biosphere
1. Oxygen
2. Carbon
3. Hydrogen
4. Nitrogen
5. Phosphorus
6. Calcium
Give me an example of a molecule
Water or Salt