ATOMS & ELEMENTS
The basic unit of matter.
What is the atom?
This is a substance formed by the chemical combination of two or more elements in definite proportions.
What is a compound?
This substance's official chemical name is dihydrogen monoxide.
What is water?
This is the result of one substance having been dissolved in another substance.
This word means "many sugars."
What is a polysaccharide?
The center of the atom - it is where most of the atom's mass is.
What is the nucleus?
These tend to be shiny, malleable, ductile, good conductors of heat and electricity, and are usually solid at room temperature.
What are metals?
Ice floats on water because it is this.
What is less dense?
Cocoa powder, cinnamon, and vegetable oil all share this same fear.
What is hydrophobia or hydrophobic?
This is the most abundant biopolymer on the earth, probably because it the main component of all plant cell walls.
What is cellulose?
This subatomic particle has a negative charge, almost no mass, and circles the nucleus of the atom.
What is an electron?
Metals and nonmetals tend to form what kind of kind chemical bonds with one another?
What are ionic bonds?
This refers to the attraction between molecules of the same substance.
What is cohesion?
Human blood is an example of this kind of mixture.
What is a suspension?
The unifying characteristic of this group is that they do not dissolve in water.
What are lipids?
What are valence electrons?
This chemical bond arises when the elements in it share their electrons with one another.
What is a covalent bond?
This refers to the attraction between molecules of different substances.
What is adhesion?
This word describes a substance that is being dissolved in another substance.
What is a solute?
This is the main component of all cell membranes. Central to its ability to play that role is that it is hydrophobic on one end and hydrophilic on the other.
What is a phospholipid?
This refers to atoms of the same element that have different numbers of neutrons. The most rare ones are often radioactive.
What are isotopes?
This chemical bond arises when the elements in it share their electrons with one another, but they do so unequally.
What is a polar covalent bond?
This is an attraction between the partially-positive hydrogen on one water molecule with the partially-negative oxygen on another one.
What is a hydrogen bond?
Steel is a solution in which iron serves as the solvent. This is the solute.
What is carbon?
Fatty acids in your bloodstream and stored in your fat cells are combined to make this macromolecule.
What is a triglyceride?