Brainscape Periodic Table

Question 2

On the PT a group goes from___.

Answer 2

Top to bottom

Question 3

On the PT a period goes from ___.

Answer 3

Left to right

Question 4

What are two synonyms for group?

Answer 4

Column, Family

Question 5

What is a synonym for period?

Answer 5

Row

Question 6

Valence

Answer 6

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

Question 7

Why is valence important?

Answer 7

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

Question 8

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

Answer 8

8

Question 9

If an element has a valance of 8___.

Answer 9

It will not react

Question 10

If an element has a valence of 1 ___.

Answer 10

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

Question 11

If an element has a valence of 2 ___.

Answer 11

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

Question 12

If an element has a valence of 3 ___.

Answer 12

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

Question 13

If an element has a valence of 4 ___.

Answer 13

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

Question 14

If an element has a valence of 5 ___.

Answer 14

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

Question 15

If an element has a valence of 6 ___.

Answer 15

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

Question 16

If an element has a valence of 7 ___.

Answer 16

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

Question 17

One Oxygen atom will bond with ___ hydrogen atoms.

Answer 17

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

Question 18

One oxygen atom will bond with ___ magnesium atoms.

Answer 18

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.

Question 19

Who first ordered the elements into a period?

Answer 19

Demitri Mendeleev

Question 20

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

Answer 20

Atomic Mass and Reactivity

Question 21

What was wrong with Mendeleev’s periodic table?

Answer 21

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.

Question 22

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

Answer 22

It increases by one.

Question 23

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

Answer 23

It increases most of the time

Question 24

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

Answer 24

It increases by one. (1-8)

Question 25

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

Answer 25

It stays the same

Question 26

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

Answer 26

It increases

Question 27

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

Answer 27

It increases

Question 28

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

Answer 28

It stays the same

Question 29

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

Answer 29

It increases

Question 30

Moseley's work reorganized the PT by increasing \_\_\_.

Answer 30

Atomic number

Question 31

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

Answer 31

Non Metal

Question 32

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

Answer 32

Metal

Question 33

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

Answer 33

Metalloid

Question 34

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

Answer 34

Metalloid

Question 35

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

Answer 35

Metal

Question 36

Use the periodic table. The valence of F is \_\_\_.

Answer 36

7

Question 37

Use the periodic table. The valence of Ne is \_\_\_.

Answer 37

8

Question 38

Use the periodic table. The valence of B is \_\_\_.

Answer 38

3

Question 39

Use the periodic table. The valence of Na is \_\_\_.

Answer 39

1

Question 40

Use the periodic table. The valence of Ca is \_\_\_.

Answer 40

2

Question 41

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

Answer 41

2

Question 42

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

Answer 42

3

Question 43

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

Answer 43

7

Question 44

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

Answer 44

4

Question 45

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

Answer 45

5