Ch 2 Chem Word Scramble
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Question | Answer |
Matter | Has mass, occupies space |
3 states of matter | liquid, solid, gas |
Atomic Structure | Nucleus, Electrons, Protons |
Nucleus | Protons (+) , Neutrons (no change) |
Electron (-) | Orbiting the nucleus, in shells (orbitals, have a negative electrical charge |
Protons (+) | have positive electrical charge |
Neutrons | are neutral, uncharged |
Atomic Number | number of protons (smaller #) |
Atomic Weight (Mass) | number of protons and neutrons |
Isotopes | variation in the # of neutronsHalf lifetime it takes for half of the element to decay |
Atomic Symbol | Letter abbreviation1st letter capitalized2nd letter lower case |
Electrons shells | outer rings that circle the atom |
Chemical Bonding | taking smaller to make larger (anabolic) |
Ionic Bonding | gain and loss of an electrons ie..Na + Cl = NaCl |
Ion (electrolytes) | Charged element |
Cation | has a positive charge ie...Na+ |
Anion | has a negative chargeie...Cl- |
Covalent Bonding | sharing of electrons between 2 elements |
Non polar | equal sharing of e- |
Polar | unequal sharing of e- |
Hydrogen Bonding | H bonds to either O or N that is already in a molecule or compound |
Molecule | 2 like elements coming together |
Compound | 2 or more different elements |
Chemical Reaction | metabolism- building up or breaking down |
Potential energy | stored energy |
Kinetic energy | energy being used |
Factors effecting chemical reaction rates | 1. Temperature 2. Size 3. Concentration 4. pH 5. Biological Catalyst (enzyme) |
Acid | release a hydrogen (H+) ion (proton) |
Base | accepts hydrogen ion proton (H+)release hydroxylions (OH-) |
Buffers | (resist small change in the pH of solutions)weak acid or weak base that will either release or accept hydrogen ions to maintain the pH with a range |
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cortney0217
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