Science Exam
vocab 4 the science exam (viz) only chemistry vocab on this one, the next one is only ecology, and then one with both of the vocabs
Terms
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- product
- the result of a chemical reaction (compound)
- ph scale
- shows how strong an acid or base is
- noble gases
- elements with 8 valence electrons
- proton
- a particle with postive charge
- halogens
- elements with 7 valence electrons
- valence electrons
- electrons on the outermost energy level of an atom
- super saturated
- more solute dissolved. (if cooled down to original tempo solute remains in solution)
- exothermic
- (of a chemical reaction or compound) occurring or formed with evolution of heat
- bases
- taste bitter, slippery, don't conduct electricity, recognized by an OH- ions
- solution
- the result of two or more things mixing
- polyatomic ion
- a group of covalently bonded atoms that carries a charge and acts as a unit
- electron
- a particle with negative charge
- electron dot diagram
- a diagram to show the valence electrons of chemicals
- ionic bonds
- formed when one or more electrons are transferred from one atom to another
- unsaturated
- solution in which it is possible for more solute to be dissolved
- covalent bonds
- form when electrons are shared between atoms
- mendeleev
- Russian chemist who developed a periodic table of the chemical elements and predicted the discovery of several new elements (1834-1907)
- neutron
- a particle with no charge
- dilute
- weak
- chemical digestion
- Enzymes breaking down molecules to digest food
- saturated
- state of a mixture in which the maximum amount of solute has dissolved in a solution
- law of conservation of matter
- the idea that matter cannot be created or destroyed
- alkali metals
- elements with 1 valence electron
- indicator
- indicates what the thing (acid or base) is
- mechanical digestion
- Part of digestion that uses movement and muscles to break down food
- endothermic
- (of a chemical reaction or compound) occurring or formed with absorption of heat
- acids
- taste sour, conduct electricity, recognized by an H+ ions
- reactant
- the chemicals making a reaction that makes a compound
- ion
- a particle that is electrically charged (positive or negative)