Glossary of -2- micro
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- Basic Chemistry
- The chemistry of living and nonliving things obey the same laws.
- Living organisms have special properties (a life force) and are governed by different laws than those that govern inanimate object.
- A living organism is a "machine" subject to the same physical and chemical laws as inanimate objects.
- What is ALL living and nonliving matter made up of?
- What are the structures of an atom?
- (with a negative charge) orbit the nucleus.
- Protons have a positive charge and neutrons are uncharged.
- Atomic number
- total # of protons
These are the #'s that are located on the lower left.
- Atomic weight/mass
- Total # of protons and neutrons.
These are located on the top left.
- Neutral Atom
- Number of electrons = number of protons.
- A positively or negatively charged atom.
- Different forms of the same element. Nuclei contain the same number of protons but DIFFERENT numbers of neutrons.
- Matter composed of only one kind of atoms. Can't be broken down further by ordinary chemical means.
- A collection of atoms held together by chemical bonds.
- A molecule is the smallest part of a substance that still has the __________ of the substance. May be composed of the same or different atoms.
- A substance consisting of two or more atoms of different elements and having PROPERTIES different from the elements that compose it.
- Mixtures can be separated by nonchemical means.
- What is the difference btwn Compounds vs. mixtures?
- What are the states of matter?
- Particles (atoms & molecules) are strongly bound to one another. The only motion is vibration and rotation. Maintains a fixed volume and shape.
- When you add heat to a solid (ice cube), what does it turn into?
- Particles far apart. No fixed volume or shape.
- Chemical bonds
- Electrons are in constant motion around the nucleus in regions called _______ ______ or energy levels. Electron shells are composed of ________. There is no in btwn.
- The _______ the energy level of the electron the father away it orbits from the nucleus.
- No more than ____ electrons can occupy the same orbital at the same time.
- 1st shell
- Max. of 2 electrons
- 2nd shell
- Max. of 8 electrons.
- chemical bonds
- Atoms try to fill up their outermost shell by forming ________ _____.
- What are the 3 different kinds of chemical bonds?
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