chap.2 - a&p chem
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- are ionic bonds weak?
- yes
- attraction between 2 opposite charged ions
- ionic bonds
- polar covalent bonds
-
one atom pulls more
-electrons don't equal - which covalent bond ---> electons don't equal
- polar covalent
- t/f-- nonpolar covalent bond are equal
- t
- non polar covalent bond
- pull of both atoms
- compound
- substance consisting 2 or more different elements
- molecule
- 2 or more atoms bonded together
- what are valence electrons?
- electrons in outter shell
- how to get mass number
- # of protons + neutrons
- where is the mass number located on an element?
- before symbol..top left
- how do u find the # of neutrons?
- mass#-atomic#
- whats the atomic number?
-
number of protons in nucleus
(p=e) - where is the atomic number located at?
- before element-- bottom left
- what are the subatomic particles?
- neutrons, protons, electrons
- which subatomic particle(s)are located in the atomic nucleus?
- neutons and protons
- electons are around..?
- cloud in nucleus
- positive charge is the..?
- protons
- negative charge is the..?
- electrons
- neutrons have a charge.(t/f)
- false
- why is potential and kinetic energy associated in A&P?
- because its how our BODY FUNCTIONS; need ENERGY FOR CELLS or bad health chem.
- What are the forms of energy?
- chemicla energy, electrical, mechanical energy, radiant
- radiant energy
- energy traveling in WAVES
- mechanical energy
- directly invovled in MOVING MATTER
- electrical energy
- movement of charged particles
- chemical energy
- released in chemical reaction
- Potential to kinetic energy is an example of what?
- chemical energy
- what is the difference between mass and weight?
-
WEIGHT is GRAVITATIONAL FORCE acting on matter.
MASS is the amount of SPACE - what is chemistry?
- its the study of atoms
- why are we studying chemistry?
- becuz everything is made-up of atoms
- what is the difference b/w kinetic and potential energy?
- protential is stored energy. kinetic is energy in action
- what does matter need to move?
- energy
- whats the diff. b/w matter and energy?
- matter has space and mass. energy has NO space and mass/
- energy
- capacity to do work
- 3 states of matter?
-
solid
liquid
gas - atoms that gained or lost unequal electrons
- ion
- hydrogen bonds
- attraction b/w polar molecules .. important in life.. they dont share or tranfer electrons
- ionic bonds
- weak bond is water
- chemical reactions
- make and break chemical bonds
- whats the REACTANTS in a chemical reaction?
- starting material
- whats the PRODUCTS in a chemical reaction?
- ending material
- three types of chemical reactions
- synthesis, decomposition, exchange
- synthesis
- requires energy input of 2 or more reactants combined
- decomposition
- reactants broken down into less complex
- exhange
- both sythesis and decomposition involved
- ADP-->ATP
- ANABOLISM
- ATP-->ADP
- CATABOLISM
- equallibrium
- rate of product information equals rate of reactant information
- what affects speeds up chemical reaction?
-
-reactivity of reactants
-concentration of reactants
-temp. increases
-catalyst present - what do enzymes do?
- lower activation energy
- "-ase" is usually a(an)?
- enzyme
- reactant enzymes act on?
- substrate
- heat is the high form of energy. T/F
- F. its the lowest
- body is made out the what 4 elements of life?
-
carbon
hydrogen
oygen
nitrogen - when are electrons the happiest?
- close to nucleus
- amount of attraction an atom has for the electrons of a covalent bond
- electronegativity
- metabolism
- SUM TOTAL OF ALL CHEMICAL REACTION IN CELL
- ions seperate is an example of?
- dissociation
- proteins are also..
- enzymes