Biology Chapter 2
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The smallest particles that retain the properties of an element.
Material that takes up space.
6 Elements of Life
2 Main parts of an Atom
Contains dissolved substances called solutes
Atoms of a single element that differ in their number of neutrons.
Isotopes have the same number of protons but different atomic masses.
*weakest type of bond*
form when opposite charges on two molecules are attracted to each other
The combination of a weak acid and the base that forms when the acid dissolves in water.
Atom or molecule that has either lost or gained electrons.
- Gained= Net Negative
- Lost= Net Positive
The tendency of water molecules to cling together.
Molecules form hydrogen bonds with water.
Molecules do not form hydrogen bonds with water
Electrons are transferred between atoms.
Polar Covalent Bond
Electrons are not shared equally. They are drawn more to 1 atoms nucleus that the other.
Nonpolar Covalent Bonds
Electrons are shared equally between atoms.
The smallest part of a compound that still has the properties of that compound.
2 or more dufferent elements bonded together.
Neutrally charged particles located in Nucleus.
Mall of a neutron is equal to the mass of the protons.
Pure chemical substances composed of atoms that cannot be degraded by chemical means into a substance having different properties.
Negatively charged particles located in the electron cloud.
Have so little mass they are not calculated in the mass of the atom.
If you mix salt and water what is the solution? What is the solute?
What would you like to do?
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