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chemistry simple
simple chemistry
| Question | Answer |
|---|---|
| Chemistry | science that deals with composition of matter |
| Element | substance from wich all matter is made of |
| Atom | Fundimental unit that makes up chemical elements |
| Proton | Positively charged atom |
| neutron | nuetral no charge atom |
| electron | negatively charged atom |
| neucleous | center of Atom |
| atomic number | number of protons and electrons present in nuecleus or around nucleus of each of it's atoms |
| orbital | circulates around atom |
| energy levels | defined by distance from the nucleus |
| 1st energy level | closest to necleus composed of one orbital max of two electrons |
| 2nd energy level | farthest away can have up to four orbits possible 8 electrons |
| Nonmetal | outer most energy level must have more than 4 electrons but less than eight electrons |
| metal | outer most shell must have less than 4 electrons. |
| Molecules | simply a combination of two or more atoms |
| Molecule | can be made of like atoms |
| Molecule | most often made of 2 or more different atoms |
| compounds | molecules formed by union of 2 or more atoms |
| simple | made of few elements |
| complex | made of many elements |
| water | most abundant compound in body |
| mixture | blends of two or more substances |
| types of mixtures | solution, suspension, colloidal |
| solution | mixture remain evenly distributed, like sugar in tea |
| suspension | mixture solvent settles out unless constantly shaken like salad dressing |
| colloidal suspension | mixture particles do not disolve like fruit in jello |
| dissolving substance | is the solvent, like water in koolaid |
| solute | substance that is dissolved, like salt, sugar, koolaid |
| neutralized | equal number of protons and electrons |
| Ionic Bond | Opposites attract. Produce compound when cling together |
| Covalent Bond | Sharing. sharing of electrons between atoms. |
| acid | chemical substance capable of donating a hydrogen ION to another substance |
| Base | chemical substance containg a hydrogen ION that can accept a hydrogen ION |
| a reaction between an acid and a salt produces what? | Salt |
| buffers | chemicals that maintain homeostasis in body |
| we need these compounds to sustain life | organic compounds |
| organic compounds | all chemical compounds that sustain life |
| organic compounds must contain these to be classified | carbon, hydrogen, oxygen |
| Large Complex molecules | consist of organic compounds |
| Lrge compound molecules | formed from simple molecules called building blocks |
Created by:
shelstover1
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