Water/ BC/ Acid Word Scramble
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Question | Answer |
atomic number | number of protons in the nucleus |
atomic mass | number of protons plus number of neutrons |
electrons fill first shell | 2 |
electrons fill second shell | 8 |
electrons fill third shell | 8 |
element | a substance that cannot be broken down to other substances |
compound | two or more elements in a fixed ratio |
atom | smallest unit of matter that retains the properties of an element |
isotope | two atoms of the same element that have a different number of neutrons. Radioactive |
solute | in a solution dissolved in the solvent |
solvent | in a solution fluid that dissolves the soluteq |
Na | p=11 n=12 |
Mg | p=12 n=12 |
Al | p=13 n=14 |
P | p=15 n=16 |
S | p=16 n=16 |
Cl | p=17 n=18 |
K | p=19 n=20 |
Ca | p=20 n=20 |
cohesion | holding together of like substances-- like substances attach |
adhesion | holding together of different substances-- different substances attach |
surface tension | water attaches to itself with hydrogen bonds and forms a skin on the surface that can support small objects that are heavier than water |
why does a metal paperclip float on water? | because of surface tension |
why does water climb up a papertowel? | because of capillary action |
acid | pH value below 7 |
base | pH value above 7 |
how can an acid harm a protein (enzyme)? | they disrupt the makeup of protein molecules used for structure and chemical reactions |
why do water and oil not mix? | because water more attracted to itself than oil (cohesion) |
why does water slide around on wax paper and stick to brown paper? | because wax paper is waterproof |
why is water a polar molecule? | because it has a negative charge at one end (oxygen end) and a positive charge at the other (hydrogen end) |
why does water have polar covalent bonds? | because electrons spend more time near the oxygen atom than the hydrogen atom |
what is a hydrogen bond? | weak bonds water can form with itself |
why will some substances dissolve in water and others not? | substances will only dissolve in water if they have a charge (can be positive or negative) |
what is the molecular makeup of water? | water is a polar covalent bond that is slightly negatively charged on the oxygen end and is slightly positively charged on the hydrogen end. |
describe the ionic bond between sodium and chlorine | sodium gives an electron to chlorine making them both stable. |
ion | charged atom |
Created by:
edenbreslauer
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