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SRNAChem&Physics > Lecture 2 Chemistry Review > Flashcards

Lecture 2 Chemistry Review Flashcards

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1
Q

Mass is defined as

A

Defined as anything that has mass and occupies space

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2
Q

All matter is comprised of ______

A

Atoms

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3
Q

Difference between mass number and atomic number?

A

Mass is the number of protons and neutrons. The atomic mass is the AVERAGE of each isotope of natural occurring.

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4
Q

How do you find the average mass of two isotopes

A

Add both mass/ 2

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5
Q

What is it called in the periodic table going accross (h –> he

A

Period

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6
Q

What is it called in the periodic table going Down ?

A

Groups

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7
Q

Define ion

A

a molecure with a NET ELECTRICAL CHARGE

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8
Q

What is a cation

A

Positively charged ions

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9
Q

What is anion

A

Negatively Charged ions

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10
Q

How are ions formed

A

By losing or gaining an electron

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11
Q

Metals are on the ____side of the periodic table and tend to form ______; Nonmetals are on the _____ and tend to form _________

A

left; cations – right; anions

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12
Q

For ________(trans/non/metals) they tend to form

A

Multiple ions of different charges.

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13
Q

What a hydrate? reversible yes or no?

A

Compound that absorbs Water in its crystallize form; Reversible.

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14
Q

Difference between ionic and molecule

A

ionic (combination of metal and non-metals)

non-ionic (Nonmetals only)

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15
Q

Strong electrolytes

A

NaCL

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16
Q

The number of Electrons should equal the number of ______

A

Protons

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17
Q

Isotopes can be

used in ______ ____

A

unstable and radioactive

nuclear medicine

18
Q

________scan to evaluate for ______Cancer

A

Iondine-123; Thyroid

19
Q

_________ comprised of only one kind of atom.

A

Elements

20
Q

________groups of atoms covalently bonded into

discrete units. Electrically Neutral.

A

Molecules -

21
Q

Question: Can a substance be both a molecule and an

element?

A

Yes. Oxygen (O2) two oxygen atoms bonded
together form a diatomic molecule of oxygen. But
oxygen is also an element on it’s own.

22
Q

Electrolytes involve : bones/teeth, muscle contractions, nerve impulses, blood clotting

A

Ca2+

23
Q

Element : helps bal. fluids & pH

A

Cl-

24
Q

Element : Erythrocyte production, absorption of Fe++, helps form collagen, act as antioxidant

A

Cu

25
Q

Ion for acid base balance, stomach HCl

A

Hydrogen (H+)

26
Q

Element helps in Thyroid hormones T3 & T4

A

Iodine

27
Q

Element helps in hemoglobin

A

Hgb (280 million molecules Hgb per RBC)

28
Q

Element that is a cofactor for 300+ enzymes, helps regulate metabolic functions.

A

Magnesium

29
Q

Magnesium can be used to

A

Can be used to slow uterine contraction

30
Q

Involved in ATP production in cellular respiration

A

O2

31
Q

Involved DNA, RNA, ATP

A

Phosphorus

32
Q

Both for muscle contractions

A

K

Ca2+

33
Q

Fluid balance, nerve function, muscle contraction

A

Sodium (Na)

34
Q

Component of vital amino acids for protein synthesis

A

Sulfur

35
Q

Monoatomic ions

A

Non-metals form anionic charges based on the number of electrons needed to equal the nearest noble gas

36
Q

Formed from two or more NONMETALS bonded in a way

that results in a net electrical charge

A

Polyatomic ions

37
Q

___________compounds that absorb water are used

as __________in anesthesia

A

Anhydrous ionic; desiccants

38
Q

What is an electrolytes?

A

Any substance that dissolves in water to give a solution

that conducts electricity.

39
Q

What is a mole?

A

used in chemistry to identify or measure how

much of a substance is present.

40
Q

what is Avogadro’s number______

A

6.02x10^23

41
Q

Mole and Avogadro’s number is based on the element

A

Carbon

42
Q

One mole of anything contains _______Molecules/particles

A

6.02x10^23

SRNAChem&Physics (13 decks)

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