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Biochemistry > Section 1 Quizzes > Flashcards

Section 1 Quizzes Flashcards

1
Q

a substance that cannot be broken down chemically to a simpler substance?

A

element

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2
Q

what element has 22 neutrons, 18 protons, and 18 electrons?

A

Argon

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3
Q

the building blocks to proteins are?

A

amino acids

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4
Q

what is the scientific one letter abbreviation for Nitrogen?

A

N

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5
Q

elements within one group have similar:

A

chemical properties

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6
Q

1 g = _______ mg (miligram)

A

1000

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7
Q

On a hot day, an ice cube melting into a puddle than evaporating is what type of change?

A

physical

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8
Q

express the number 4.42x10^-2 in standard notation

A

0.0442

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9
Q

express the number 12,300,000 in scientific notation

A

1.23x10^7

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10
Q

Which element makes up the highest percentage of human body weight?

A

Oxygen

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11
Q

How many electrons can the second electron shell accommodate ?

A

8

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12
Q

One mole of a substance contains 6.022 x 10^23 formula units, this value is known as?

A

Avagadro’s number

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13
Q

What are the charges for electron and neutrons?

A

an electron has a net negative charge and a neutron has a net neutral charge

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14
Q

The octet rule refers to the tendency of atoms to prefer to have _______electrons in the valence shell

A

8

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15
Q

What type of bond is formed by sharing electrons between atoms?

A

covalent

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16
Q

What is the compound formed between F-1 and Ca+2?

A

CaF2

17
Q

How many Lewis dots are in the electron-dot symbol for boron (B)?

A

3

18
Q

A water molecule contains how many Oxygen valence electrons?

A

8

19
Q

Which of the following best describes the way ionic bonds are formed?

A

Metals lose electrons and nonmetals gain electrons to form bonds

20
Q

What element forms diatomic molecules?

A

Iodine

21
Q

A hydrocarbon with C-C triple bonds is ?

A

alkyne

22
Q

The number of covalent bonds carbon (C) can form is?

A

4

23
Q

The number of covalent bonds hydrogen (H) can form is?

A

1

24
Q

A carbon bound to four hydrogens has what shape?

A

tetrahedral

25
Q

What is the most common alkene used in plastics?

A

ethylene

26
Q

Addition reactions between Hydrogen and Alkyne Hydrocarbons produce _______ hydrocarbons

A

saturated

27
Q

Which is NOT a common element in organic molecules?

A

sulfur

28
Q

Which statement describes the Carbon Oxygen bond in ethers?

A

They are polar covalent bonds

29
Q

A secondary carbon has how many -R groups covalently bound?

A

2

30
Q

Which chemical compound can be used to represent an acid?

A

H3O+

31
Q

Enantiomers differ in what aspect?

A

Activity in drugs

32
Q

What is the simplest Aldehyde?

A

Formaldehyde

Biochemistry (10 decks)

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