Periodic Table
These are divided into metals, metalloids, and nonmetals.
What are the elements in the periodic table?
This is a change in the arrangement of atoms or molecules that creates a new substance (yields a substance of different composition and properties.)
What is a chemical reaction?
These are organic compounds made by living things.
What are biochemicals?
Characteristics include: a pH lower than 7, a sour taste, and turns blue litmus red.
What is an acid?
(Or acidity?)
This refers to a mixture formed when one material (solid or liquid) is dissolved into a liquid.
What is a solution?
This is called a period on the periodic table.
What is a horizontal row of elements?
This law states that matter cannot be created or destroyed (in an isolated system).
What is the law of conservation of mass?
A fatty substance (or biochemical) that plays a variety of roles in a cell. It does not dissolve in water, stores energy, and is part of cell membranes.
What are lipids?
These have a pH greater than 7, a bitter taste, and turn red litmus blue.
What are bases?
These are organic compounds made by living things.
What are biochemicals?
This is called a group or family on the periodic table.
What is a vertical column of elements?
This law states that energy cannot be created or destroyed only converted from one form to another.
What is the law of conservation of energy?
These are biochemicals composed of amino acids. Functions include regulating chemical activities, transporting and storing materials, and providing structural support. (Hint: these always make me think of body builders.)
What are proteins?
What is neutral?
In order to survive, these contain small and large molecules including carbohydrates, fats, proteins, and DNA.
What are living organisms?
Each of these has a specific number of protons in the nucleus, which is the atomic number.
What is an element?
This refers to a chemical reaction in which heat is released.
What is an exothermic reaction?
These are biochemicals that store information and help to build proteins and more. (Hint: DNA is one of these.)
What is nucleic acid?
This is a chemical combination of two or more different elements (atoms).
What is a compound?
Molecules made of carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur are essential for this.
What are living organisms?
(or)
What is life?
This is the largest category of elements on the Periodic Table (or chart)
What are metal elements?
This refers to a chemical reaction in which heat is absorbed.
What is an endothermic reaction?
Biochemicals that are composed of one or more simple sugars, and are used as a source of energy and for energy storage.
What are Carbohydrates?
This element has a central role in the chemistry of living organisms because of its ability to combine with other elements. (Hint-- the abundance of this element on Earth may also be why we are the only known planet with life forms)
What is carbon?
The principles of this science about reactions is necessary for all biological processes.
What is chemistry?