CHEMISTRY OF LIFE REVIEW

True or False Matter (atoms) obey the same rules of chemistry whether they are in living or non living things.

FILL IN THE BLANK If we take a living thing apart, we eventual end up with ____________

MULTIPLE CHOICE Life builds from atoms to form many levels of organization. What happens at each new level? A.A vital force becomes apparent B.Rules of chemistry change C.New properties emerge D.Nothing changes

LIST LIST 12 LEVELS OF BIOLOGICAL ORGANIZATION

FILL IN THE BLANK All living and non-living things are composed ________________. HINT-takes up space and has mass

SHORT ANSWER Where do living things get there matter from?

SHORT ANSWER Why must matter be recycled?

FILL IN THE BLANK Matter is composed of ______________ HINT-A pure substance that can’t be broken down any further by ordinary chemical means

LIST What are the six elements that make up 98% of living things?

SHORT ANSWER How can you CHNOPS to evolution?

FILL IN THE BLANK 3-4 different types of CHNOPS elements combine to make the ______________ of living things. HINT-Two or more different elements chemically combined in a fixed ratio.

SHORT ANSWER What are trace elements?

FILL IN THE BLANK Each type of element consists of one type of _____________. HINT-Smallest unit of matter that still retains the properties of an element

MULTIPLE CHOICE What determines the properties of an element? A. Structure of atom B. Arrangement of atoms within a compound C. Structure of a molecule D. The nucleus of an atom

SHORT ANSWER What are the three components of an atom?

FILL IN THE BLANKS The nucleus of an atom contains _________ and _______________

MULTIPLE CHOICE What forms a cloud around the nucleus of an atom? A. Protons B. Neutrons C. Electrons D. Alpha particles

SHORT ANSWER Which two subatomic particles make up most of the mass of the atom?

LIST List the subatomic particles and give their charge.

MULTIPLE CHOICE What subatomic particle identifies the atom? A. Proton B. Neutron C. Electron D. Alpha particle

MULTIPLE CHOICE What subatomic particle determines how an atom behaves? A. Proton B. Neutron C. Electron D. Alpha particle

MULTIPLE CHOICE What subatomic particle determines the behavior of an atom? A. Proton B. Neutron C. Electron D. Both the protons and the neutrons

MULTIPLE CHOICE The atomic number is the number of: A. Protons B. Neutrons C. Electrons D. Both the protons and the neutrons

MULTIPLE CHOICE The mass number is the number of: A. Protons B. Neutrons plus electrons C. Electrons plus protons D. Both the protons and the neutrons

SHORT ANSWER A neutral atom has an atomic mass of 18 and 7 electrons. How many protons and neutrons does it have?

SHORT ANSWER An atom with a negative 2 charge has an atomic mass of 18 and 7 electrons. How many protons and neutrons does it have?

FILL IN THE BLANK Two atoms with same atomic number but different mass number are called _______________.

TRUE OR FALSE Living things are able to distinguish between radioactive isotopes and non radioactive isotopes of same element.

MULTIPLE CHOICE Why are radioactive isotopes beneficial in biology? A. They are easily detected an traced. B. They behave exactly the same way as their nonradioactive isotope partners. C. living things don’t distinguish a difference between radioactive and nonradioactive isotopes of same element. D. All are correct

LIST List five uses of radioactive isotopes in biology:

SHORT ANSWER How are radioactive isotopes harmful?

SHORT ANSWER What electrons determine the behavior of an atom?

LIST List the number of electrons required to fill electron shell 1, 2, and 3

TRUE OR FALSE If the valence shell is complete it has eight electrons in it except for the first shell which is complete with two electrons.

TRUE OR FALSE If the valence shell is complete the atom is said to be reactive and unstable.

TRUE OR FALSE If the valence shell is not filled the atom is said to be reactive and unstable.

TRUE OR FALSE If an atom is stable and unreactive it will combine and form bonds with other atoms.

TRUE OR FALSE If an atom is unstable and reactive it will combine and form bonds with other atoms.

SHORT ANSWER What are the two ways atoms can become stable?

MATCHING A. Valence electrons B. Valence Shell C. Valence Number ____ Number of electrons in outer shell ____ The Number of bonds an atom can make ____ The outer most electron shell

SHORT ANSWER An atom has an atomic number of eight. What is its valence number and how many bonds can it make?

SHORT ANSWER Why does an atom transfer an electron to another atom?

SHORT ANSWER When there is a transfer of an electron from one atom to another atom, what happens to the charge on each atom?

SHORT ANSWER What do we call an atom with a charge?

VERY SHORT ANSWER Does the chlorine atom have the same properties as its ion?

VERY SHORT ANSWER Are ionic bonds strong in the aqueous environment of living things?

SHORT ANSWER Two ions with opposite charge will form what type bond?

SHORT ANSWER Sharing of electrons is what type of bond?

SHORT ANSWER Why are the compounds of living things made by combining CHNOPS atoms with covalent bonds?

MULTIPLE CHOICE The number of bonds an atom can form is equal to: A. The number of valence electrons B. The number of electrons needed to fill outer shell C. The number neutrons D. The number of charges

A LONGER SHORT ANSWER Name & explain the difference between the two types of covalent bonds.

MULTIPLE CHOICE Which molecule is the polar molecule? A. C2H2 B. NH3 C. C6H6

TRUE OR FALSE Polar covalent compounds have areas with partial negative charge and areas with partial positive charges.

SHORT ANSWER What does electronegativity help us determine?

Use Choices Below To Answer questions On Next Slide A. Atom on left side of periodic table, contains 1 or 2 valence electrons, and has low electronegativity. B. Atom on right side of periodic table, contains 6 or 7 valence electrons, and has low electronegativity but higher than A. C. Atom on right side of periodic table, contains 6 or 7 valence electrons, and has high electronegativity.

Answer question below using info from previous slide What type of bond will you have if you combine the following: 1. Combine A with C 2. Combine B with another B 3. Combine B with C

SHORT ANSWER A nonmetal bonded to a nonmetal will be what type of bond?

SHORT ANSWER A metal bonded to a nonmetal will give you what type of bond?

SHORT ANSWER A nonmetal with low electronegativity is bonded to a nonmetal with high electronegativity will give you what type of bond?

SHORT ANSWER When matter is rearranged by the breaking of bonds and formation of new bonds, what took place.

SHORT ANSWER Give two reasons why chemical reactions occur in cells all the time

TRUE OR FALSE Energy is stored in matter and when matter is rearranged in a chemical reaction energy may be released or absorbed and stored in the new matter formed.

MULTIPLE CHOICE All are true of biosynthesis reactions EXCEPT: A. Build larger molecules from smaller molecules. B. Store energy C. Are exothermic D. Are anabolic E. Example is photosynthesis

MULTIPLE CHOICE All are true of biosynthesis reactions EXCEPT: A. Build larger molecules from smaller molecules. B. Stores energy C. Are exothermic D. Are anabolic E. Example is photosynthesis

MULTIPLE CHOICE All are true of decomposition reactions EXCEPT: A. Break larger molecules into smaller molecules B. Release energy C. Exothermic D. Anabolic E. Example would cell respiration

TRUE OR FALSE The energy required to get a chemical reaction started (in other words-need energy to get molecules moving to collide with enough force to break bonds) is called activation energy.

TRUE OR FALSE In a lab activation energy is supplied by heat but cells must maintain homeostasis and keep their temperature stable so instead of heat they use enzymes to speed up reactions.

MATCHING A. Reactants B. Products C. Law of conservation of matter ___ 1. Left side of equation-substances that enter into chemical reaction ____ 2. Right side of equation-Substances formed by change ____ 3. Matter is not created or destroyed

MULTIPLE CHOICE Chemical equations can tell us all of these EXCEPT: A. Types of atoms B. Number of atoms C. Numerical proportion of atoms D. Position of atoms E. Reactants and products

TRUE OR FALSE In a chemical equation, the number before a symbol represent the number of atoms of the element and the subscript to the left of an element indicates the number of molecules of each substance.

MULTIPLE CHOICE It took 8000 Kcal of energy to break the bonds of the reactants and 7000 Kcal of energy were released in the formation of the products. Overall, the chemical reaction was: A. Exothermic B. Endothermic

THE END YEA!!!!!!!!