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Bio 1033 Chapter 1,2,3, and 4 Questions & Answers 100% pass
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  • Bio 1033 Chapter 1,2,3, And 4

All life forms are composed of - ANSWERSmatter Matter is defined as what - ANSWERSanything that contains mass and takes up space in living organisms,matter may exist in any of three states: - ANSWERSsolid, liquid, gas All matter is composed of - ANSWERSatoms Define molecules - ANSWERS2 ...

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  • bio 1033 chapter 123 and 4 questions answers
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  • all life forms are composed of answersmatter
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Bio 1033 Chapter 1,2,3, and 4 Questions
& Answers 100% pass
All life forms are composed of - ANSWERSmatter

Matter is defined as what - ANSWERSanything that contains mass and takes up space

in living organisms,matter may exist in any of three states: - ANSWERSsolid, liquid, gas

All matter is composed of - ANSWERSatoms

Define molecules - ANSWERS2 or more atoms bonded together

Define element - ANSWERSA pure substance made of only one type of atom

What 3 subatomic particles are found within atoms -
ANSWERSprotons,neutrons,electrons

Protons have a _______ charge. - ANSWERSpositive

Electrons have a ________ charge. - ANSWERSnegative

Neutrons have a ________ charge. - ANSWERSneutral

Like charges do what? - ANSWERSRepel each other

opposite charges do what? - ANSWERSattract each other

An _______ is the physical region of space where an electron may be found -
ANSWERSorbital

Orbitals are found within ______ - ANSWERSelectron shells, (energy levels)

Define energy - ANSWERSthe capacity to do work or cause a change.

Electrons have what type of energy - ANSWERSkinetic

Explain the difference between an electron shell and an orbital - ANSWERSelectron
shells are energy levels,an orbital is the physical space where an electron may be found

the electrons in the outer most shell are called - ANSWERSvalence electrons

valence electrons - ANSWERSElectrons on the outermost energy level of an atom

, The number of protons in an atom is its ______ - ANSWERSatomic number

define radioisotope - ANSWERSthey emit radiation

two or more atoms bonded together make up a ____ - ANSWERSmolecule

Define compound - ANSWERSa molecule composed of two or more different elements

A ______ occurs when atoms share two pairs of electrons (four electrons) rather than
one pair - ANSWERSdouble bond

What is the electronegativity of an atom? - ANSWERSits ability to attract electrons

polar covelant bond - ANSWERSunequal sharing of electrons

hydrogen bond - ANSWERSweak attraction between a hydrogen atom and another
atom

Define enzymes - ANSWERSmolecules found in all cells that facilitate or catalyze many
biologically important chemical reactions

Define cations - ANSWERSions that have a net positive charge

Anions - ANSWERSions with a net negative charge

An ______ occurs when a cation binds to an anion - ANSWERSionic bond

A molecule containing an atom with a single,unpaired electron in its outer shell is known
as a ______ - ANSWERSfree radical

Define homeostasis - ANSWERSMaintaining a constant internal environment

Define chemical reaction - ANSWERSa process that changes one set of chemicals into
another set of chemicals

What does a catalyst do? - ANSWERSSpeeds up a chemical reaction

chemical equilibrium - ANSWERSthe rate of formation of products equals the rate of
formation of reactants

substances dissolved in a liquid are known as _______ and the liquid they are dissolved
in is the _____ - ANSWERSsolutes, solvent

A substance's ________ is the amount of heat that must be withdrawn or released from
a substance to cause it to change from liquid to solid state - ANSWERSheat of fusion

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