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Chem 105 > Lecture 3 > Flashcards

Lecture 3 Flashcards

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1
Q

What is the mass in the periodic table equal to?

A

the average corrected for relative abundance of each isotope

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2
Q

What is the average atomic mass?

A

the weighted average of masses of all isotopes of an element

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3
Q

what is natural abudance?

A

proportion of a particular isotope

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4
Q

What are cations?

A

a chemical species with a + charge

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5
Q

what are anions?

A

a chemical species with a - charge

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6
Q

What do mass spectrometer determine?

A

the mass of a substance?

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7
Q

How do mass spectrometer determine the mass of a substance?

A

They convert the molecules into ions and separate ions based on mass charge ratio

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8
Q

What is one mole?

A

6.022 time 10^23 particles of a substance

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9
Q

What is nomenclature?

A

a collection of rules for naming things

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10
Q

What are binary compounds?

A

two elements

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11
Q

What are ionic compounds?

A

compounds containing only monatomic ions

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12
Q

How do you name ionic compounds?

A

cation followed by anion

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13
Q

What are ionic hydrates?

A

ionic compounds that contain water molecules

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14
Q

What is mono?

A

one

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15
Q

what is di

A

2

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16
Q

what is tri

A

3

17
Q

what is tetra?

A

4

18
Q

what is penta?

A

5

19
Q

What is hexa?

A

6

20
Q

What is hepta?

A

7

21
Q

What is octa?

A

8

22
Q

What is nona?

A

9

23
Q

What is deca?

A

10

24
Q

What are molecular (covalent ) compounds?

A

nonmetallic molecular compounds

25
Q

What are binary acids?

A

comprised of hydrogen and one other nonmetallic element

26
Q

How do you name a binary acid?

A
  1. hydrogen–> hydro
  2. nonmetallic element name is modified by adding the suffic- ic
  3. word acid is second word
27
Q

What are oxyacids?

A

compounds that contain hydrogen, oxygen, and one other element

28
Q

How do you name oxyacids?

A
  1. omit hydrogen
  2. start with the root name of the anion
  3. replace ate with ic, orite, or with ous
  4. add acid

Chem 105 (24 decks)

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