SCIENCE CAPT Strand 2
Any compound that forms H+ ions in solution and has a pH lower than 7. (0-6 on pH scale, lemons have a pH 3)
The smallest unit of an element. Made up of protons and neutrons in the nucleus that is surrounded by electrons.
|Atomic Structure|| |
This structure of an atom has a central positively charged nucleus consisting of protons and neutrons surrounded by a number of electrons.
A sometimes slippery or bitter substance that has a pH higher than 7 and has hydroxide ions (OH-)
A group of polymers found in or produced by living organisms. (Starch, sugar, cellulose) (DNA & RNA found in the body)
|Chemical Bond|| |
The force that holds atoms or ions together as a unit.
Carbon atoms can form straight chains, rings, and ______. Carbons arranged in this manner have spaces that provide a flexible property.
|By-product||Something produced unintentionally while trying to make something else|
Biopolymer made up of repeating units of carbon, hydrogen, and oxygen atoms; major source of energy for the human body that we get from food.
The element that is the chemical basis for all life on earth. This element has 4 valence electrons and forms covalent bonds.
An object becomes ________ when the atom in the object gains or loses electrons. An atom would become an ion.
|Chemical reaction||Breaking of chemical bonds between elements and formation of new chemical bonds that result in new substances|
|Chemical Change||(Chemistry) Any process determined by the atomic and molecular composition and structure of the substances involved.|
A process in which a substance reacts with oxygen to give heat and light = the process of burning!
|Compound||A substance made up of atoms of two or more different elements joined by chemical bonds.|
|Electron Configuration||The arrangement of electrons in the orbitals, or electron shells, of an atom|
Bonding that links one polymer chain to another. This bonding results in changes in the physical properties of a substance - synthetic rubber is an example.
|Element||A negatively charged substance that cannot be broken down into simpler substances.|
|Hydrocarbon||An organic compound composed of carbon and hydrogen atoms - petroleum is an example.|
_____ is the process of burning solid waste, and can result in the release of air pollutants.
|Ionic bond||A chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion. Opposite charges attract to form this bond.|
A permanent waste diposal facility where wastes are put into the ground and covered with a layer of soil, plastic, or both.
A type of element that is a good conductor of heat and electricity.
|Mixture||A __________ consists of two or more substances mixed together (not in fixed proportions and not with chemical bonding).|
Two or more atoms held together by covalent bonds.
|Monomer||This is one part of a polymer; A simple compound whose molecules can join together to form polymers.|
|Negative charge||This charge results from having an excess of electrons.|
|Neutralization||When you mix an acid and a base, a ______________ reaction occurs and forms a salt and water.|
|Neutron||A subatomic particle with no charge, located in the nucleus|
|Nucleus||The positively charged center of an atom (protons and neutrons)|
|Organic||Compounds that are carbon based, usually referring to living or once living things, are called...|
|Periodic Table|| |
A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together in "families"
|Polyethylene (plastic)|| |
Polymer formed from a chain containing many ethylene units. Also known as plastics!
|Polymer||Large compound formed from combinations of many monomers.|
|Positive||Having more protons that electrons.|
|Proton||Positively charged particle, located in the nucleus.|
|Chemical Reaction|| |
(Chemistry) A process in which one or more substances are changed into others.
Capable of being dissolved in some solvent (usually water)
A mixture in which one substance is dissolved in another
|Structure (chemical structure)|| |
The arrangement of atoms in a substance.
A man-made compound made artificially by chemical reactions.
The application of science; the ways in which people apply knowledge, tools, and inventions to meet their needs
|Vulcanized (rubber)|| |
Strengthened rubber by adding chemicals and heat (creates sulfur cross-links).
Any materials unused and rejected as worthless or unwanted.
|Covalent Bond||This type of bond forms when atoms share electrons.|
Flickr Creative Commons Images
Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.
- "Acid" image
- "Atom" image
- "Atomic Structure" image
- "Base" image
- "Biopolymer" image
- "Chemical Bond" image
- "Branched" image
- "Carbohydrate" image
- "Carbon" image
- "Charged" image
- "Combustion" image
- "Cross-linked" image
- "Incineration" image
- "Landfill" image
- "Metal" image
- "Molecule" image
- "Periodic Table" image
- "Polyethylene (plastic)" image
- "Chemical Reaction" image
- "Soluble" image
- "Solution" image
- "Structure (chemical structure)" image
- "Synthetic" image
- "Technology" image
- "Vulcanized (rubber)" image
- "Waste" image
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