Flashcards in Deck 2 Deck (30)
Subatomic particle, located in shells on the outside of the nucleus, has a negative charge and almost no mass.
A measure of the tendency of an atom to attract a bonding pair of electrons. How strongly does an atoms attract bonding electrons to itself?
Atoms with unique properties, designated by the atomic number.
Weak chemical bond. Occurs between atoms in different molecules or parts of molecules. Weak electrostatic attraction between areas of molecules with opposite partial charges.
Positively or negatively charged atom.
Moderately strong chemical bond. Occurs between atoms in the same molecule. Electrons transfer from one atom to another.
Any or two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights.
Anything that occupies space and has mass.
A formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
Subatomic particle, electrically neutral, located in the nucleus. Mass of one amu
Center of the atom. Contains equal number of protons and neutrons.
Chart organizing elements by atomic number and weight.
Subatomic particle, located in the nucleus, with a positive charge. Mass of one amu.
Electrons on the outermost shell of the atom. Involved in chemical bonds.
The attraction between water molecules and other molecules.
Water molecules are attracted to each other, keeping the molecules together.
Substances that will dissolve in water. Polar. They split into positive and negative ions and dissolve in water. Examples: sugars and alcohols.
Substances that do not dissolve in water. Non-polar. Examples: hydrocarbons and fatty acids.
The capacity of a liquid's surface to resist being ruptured when placed under tension or stress.
The component(s) present in lower quantities.
Homogeneous mixtures, with 2 components: solvent and solutes.
The component of the solution in the greatest quantity.
Biological macromolecule. Sugars. Essential for energy storage, cellular communication and structural support. Store energy; provide structural support; facilitate communication
Chemical potential energy
The energy stored in the chemical bonds of a substance.
Molecules like water, oxygen gas, carbon dioxide, and ionic salts. Relatively stable, simple, and store little chemical energy.
Biological macromolecules. Fatty acids. Essential for energy storage and maintaining a boundary between the living organism and its environment. Provide energy (long term); serve as structural components of membranes
Biological macromolecules. Nucleotides. Essential for information storage within a cell and passing on this information to the next generation. Examples: DNA. Store genetic information, used in protein synthesis.
Any molecule that contains a carbon to hydrogen covalent bond. Often complex and many store a lot of chemical potential energy. Examples: glucose, methane, DNA, protein and fat.
Biological macromolecules. Amino acids. Essential for carrying out most of the necessary functions of life. Serve as structural components of tissues; facilitate and speed up biochemical reactions (enzymes); participate in communication