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Chemistry > Brainscape Periodic Table > Flashcards

Brainscape Periodic Table Flashcards

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2
Q

On the PT a group goes from___.

A

Top to bottom

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3
Q

On the PT a period goes from ___.

A

Left to right

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4
Q

What are two synonyms for group?

A

Column, Family

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5
Q

What is a synonym for period?

A

Row

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6
Q

Valence

A

The number of electrons on the outer energy level of an atom

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7
Q

Why is valence important?

A

It effects the way elements bond/react with each other.

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8
Q

What is the valence that most atoms “try” to reach?

A

8

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9
Q

If an element has a valance of 8___.

A

It will not react

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10
Q

If an element has a valence of 1 ___.

A

It will lose one electron (there will be an energy level of 8 exposed by this).

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11
Q

If an element has a valence of 2 ___.

A

It will lose two electrons (there will be an energy level of 8 exposed by this).

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12
Q

If an element has a valence of 3 ___.

A

It will lose three electrons (there will be an energy level of 8 exposed by this).

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13
Q

If an element has a valence of 4 ___.

A

It will gain or lose electrons because 4 is half way to 8.

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14
Q

If an element has a valence of 5 ___.

A

It will gain 3 electrons to fill its outer energy level to 8.

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15
Q

If an element has a valence of 6 ___.

A

It will gain 2 electrons to fill its outer energy level to 8.

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16
Q

If an element has a valence of 7 ___.

A

It will gain 1 electron to fill its outer energy level to 8.

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17
Q

One Oxygen atom will bond with ___ hydrogen atoms.

A

2Oxygen has a valence of 6. Hydrogen has a valence of 1. Together the three atoms will have 8 valence electrons to satisfy oxygen.

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18
Q

One oxygen atom will bond with ___ magnesium atoms.

A

1Oxygen has a valence of 6. Magnesium has a valence of 2. Together the two atoms will have 8 valence electrons to satisfy oxygen and magnesium.

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19
Q

Who first ordered the elements into a period?

A

Demitri Mendeleev

20
Q

What two pieces of evidence were most important for Mendeleev as he ordered the periodic table?

A

Atomic Mass and Reactivity

21
Q

What was wrong with Mendeleev’s periodic table?

A

The pattern in atomic mass did not always increase from left to right. There were a few inconsistencies that would have caused elements to be grouped with elements that did not have similar properties.

22
Q

What happens to the pattern of atomic number as we move from left to right?

A

It increases by one.

23
Q

What happens to the pattern of atomic mass as we move from left to right?

A

It increases most of the time

24
Q

What happens to the pattern of valence as we move from left to right?

A

It increases by one. (1-8)

25
Q

What happens to the pattern of energy levels as we move from left to right?

A

It stays the same

26
Q

What happens to the pattern of atomic number as we move from top to bottom?

A

It increases

27
Q

What happens to the pattern of atomic mass as we move from top to bottom?

A

It increases

28
Q

What happens to the pattern of valence as we move from top to bottom?

A

It stays the same

29
Q

What happens to the pattern of energy levels as we move from top to bottom?

A

It increases

30
Q

Moseley’s work reorganized the PT by increasing ___.

A

Atomic number

31
Q

Use the periodic table. Chlorine is a ___. (metal, nonmetal or metalloid)

A

Non Metal

32
Q

Use the periodic table. Aluminum is a ___. (metal, nonmetal or metalloid)

A

Metal

33
Q

Use the periodic table. As is a ___. (metal, nonmetal or metalloid)

A

Metalloid

34
Q

Use the periodic table. Sb is a ___. (metal, nonmetal or metalloid)

A

Metalloid

35
Q

Use the periodic table. Pb is a ___. (metal, nonmetal or metalloid)

A

Metal

36
Q

Use the periodic table. The valence of F is ___.

A

7

37
Q

Use the periodic table. The valence of Ne is ___.

A

8

38
Q

Use the periodic table. The valence of B is ___.

A

3

39
Q

Use the periodic table. The valence of Na is ___.

A

1

40
Q

Use the periodic table. The valence of Ca is ___.

A

2

41
Q

Use the periodic table. How many energy levels does He have?

A

2

42
Q

Use the periodic table. How many energy levels does Si have?

A

3

43
Q

Use the periodic table. How many energy levels does Fr have?

A

7

44
Q

Use the periodic table. How many energy levels does Br have?

A

4

45
Q

Use the periodic table. How many energy levels does Xe have?

A

5

Chemistry (2 decks)

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