Matter
Chemical Reactions
Water and solutions
Macromolecules
Last question
100
1- Which type of bond is formed when two atoms share electrons?
2- A(n) ____________________________ is an electrical attraction between two oppositely charged atoms or groups of atoms.
1- covalent bond
2- ionic bond
100
The process by which atoms or groups of atoms in substances are reorganized into different substances is called a______
Chemical reaction
100
Molecules that have an unequal distribution of charges are called ___________, meaning that they have oppositely charged regions.
polar molecules
100
1- Large molecules that are formed by joining smaller organic molecules together are called
2- ____________ are molecules made from repeating units of identical or nearly identical compounds called monomers that are linked together by a series of covalent bonds.
3- What are the building blocks of polymers?
1- macromolecules
2- polymers
3- monomers
100
What is a heterogeneous mixture in which the particles do not settle out?
Colloids
200
1- Which pure substance is formed when two or more elements combine?
2- The force that holds substances together in a compound is called?
1- Compound
2- Chemical Bond
200
What are the parts of a chemical reaction?
Reactants ----- Products
200
What do the following do?
1- Cohesion
2- Adhesion
1- Water molecules are attracted and ''stick'' to each other
2- water molecules can bind with other molecules
200
1- Carbohydrates function:
2- Elements:
3- Monomer:
4- Polymer:
5- Examples:
1- provides structure, stores energy
2- CHO 1:2:1 ratio
3- monosaccharide
4- polysaccharide
5- sugars and starches
200
What is a mixture that can react with acids or bases to keep the pH in a particular range?
Buffer
300
1- A molecule composed of one kind of atom; cannot be broken into simpler units by chemical reactions. What is it?
2- Which term describes atoms of the same element with different numbers of neutrons?
3- An atom that has gained or lost one or more electrons becomes a(n) __________ and carries an electric charge.
1- Elements
2- Isotopes
3- Ions
300
1- What kind of reaction releases energy in the form of heat?
2- What kind of reaction absorbs energy in the form of heat?
1- Exothermic reaction
2- Endothermic reaction
300
1- What is it called when a mixture in which the components remain distinct?
2- What is it called when a mixture in which the components remain the same?
1-Heterogenous
2- Homogenous
300
1- lipids function:
2- elements:
3- monomers:
4- polymers:
5- example:
1- form membranes, provide insulation, long-term energy
2- CHO more hydrogen
3- fatty acids and glucose
4- triglycerides, phospholipids
5- fats, oils, waxes, steroids
400
What charge do a proton, neutron, and electron carry? and where are they in an atom?
Proton- Positive, inside the nucleus
Neutron- neutral, inside the nucleus
Electron- negative, outside the nucleus
400
What are the following-
1- Enzymes
2- substrate
3-active site
4- enzyme-substrate complex
1- Speeds up a reaction
2- the reactant that binds to the enzyme
3- the specific location where a substrate binds to
4- the finished product
400
Acids are substances that release _________ ions
Bases are substances that release _________ ions
Acids- hydrogen
bases- hydroxide
400
1- protein function:
2- elements
3- monomer:
4- polymer:
5- example:
1- transports substance, speeds up reactions, aids in cell communication, provides structural support, and controls cell growth
2- CHON
3- amino acid
4- polypeptide
5- actin, insulin, collagen, hemoglobin, enzymes
500
What are atoms?
Building blocks of matter
500
What factors affect enzyme activity?
Temperature and pH
500
1- what are the ranges for neutral, acidic, and basic?
2- Where is it least, most acidic, and most, least basic? 
Neutral-7, acidic - 0-6.9, basic 7-14
Least, most acidic- 6, 1. most, least basic- 8, 14
500
1- nucleic acid function:
2- elements:
3- monomer:
4- polymer:
5- example:
1- transmits genetic information
2- CHONP
3- nucleotide
4- DNA and RNA
5- Deoxyribonucleic acid/ribonucleic acid