Chemistry/Biochemistry Study Guide Flashcards
Prepare student for the Unit 2 Test.
What is the overall charge of a normal atom?
Neutral
What type of bond is based on the electrical attraction between oppositely charged particles?
Ionic
All organic compounds contain what element?
Carbon
What is the form of matter composed of two or more elements held together by an ionic bond called?
Compound
What is the name of the bond that consists of a sharing of electrons?
Covalent
What is a molecule?
Two or more atoms held together with covalent bonds.
What is kinetic energy?
Energy due to motion.
What is potential energy?
Energy due to position.
Give an example of a polysaccharide.
There are many, but they must contain at least two monomers.
Iodine is a test indicator for which biological molecule?
Starch.
Which organic molecule is used by the cell for growth and repair?
Proteins
The molecule that is composed of 6 carbon, 6 oxygen, and 12 hydrogen atoms is called what?
Carbohydrate
What is the symbol for carbon?
C
Anything that occupies space and has mass is called what?
Matter
Monosaccharides are grouped together to form disaccharides in a process called what?
Dehydration synthesis
The hydrophillic “head” of a fatty acid is or is not attracted to water.
Is
What is an ion?
An atom that has lost or gained an electron
Where is the only place that nuclear reactions take place naturally?
The sun
What is the basic unit of matter?
Atom or element
Which type of reaction takes place in cells?
Chemical
Glucose is an example of which biological molecule?
Carbohydrate
How many amino acids are there
20
C6H12O6 is an example of?
Chemical formula
Carbohydrate
Which organic compound is found in the cell membrane?
Proteins
Lipids
How many bonds does carbon form with other atoms?
4
What is the smallest structure of matter?
Atom
What does the pH scale measure?
The acidity of a substance. The number H+ and OH- ions.
Where are acids found on the pH scale?
1-7
Where are bases found on the pH scale?
7-14
What pH is water?
7
Do you understand different types of solutions?
If you don’t, revisit your notes.
What do nucleic acids do?
Store information
The organic molecule which is composed of building blocks containing an amine group and a carboxyl group is called what?
Amino acid
Protein
The organic group that contains oils and waxes is called what?
Lipids
DNA and RNA are examples of what organic group?
Nucleic acids
What is the term for the amount of energy required for a reaction to begin?
Activation energy
Water is a ______ compound.
Polar
A steroid is best categorized as what biological molecule?
Lipid
How many electrons does a carbon atom have in its outer energy level?
4
Triglycerides taht are liquid at room temperature are called what?
Oils
Proteins that speed up a chemical reaction by lowering the activation energy are called what?
Enzymes
Light is a form of what?
Energy
Heat is a form of what?
Energy
Define a gas.
No shape, no volume
What are the basic building blocks of all matter?
Atoms
Define a liquid.
No shape, definite volume
Energy due to movement is called what?
Kinetic energy
The pH of water is what?
7
Do you KNOW the Unit 1 study guide?
If not, go back and review it. All questions and subject material from previous units is fair game on this test.
Do you know how to do metric conversions and the fields of science vocabulary?
If not, go back and review it. All questions and subject material from previous units is fair game on this test.
