Arranging The Elements

Question 0

What did he discover?

Answer 0

The elements were periodic

Question 1

Who discovered the pattern to the elements? When?

Answer 1

Dmitiri Mendeleev-1869

Question 2

What does periodic mean?

Answer 2

Happened at regular intervals and repeated the pattern every 7 elements

Question 3

What was he able to predict based on the pattern?

Answer 3

The missing elements

Question 4

Where was Mendeleev from? What was his job?

Answer 4

A Russian chemist

Question 5

Who was Henry Mosley?

Answer 5

A British scientist

Question 6

What did he discover?when.

Answer 6

1914- he determined the number of protons in an atom

Question 7

What are the number if protons in an atom?

Answer 7

The atomic number

Question 8

What happened to Mendeleev’s prediction?

Answer 8

All the elements fit when arranged by atomic number

Question 9

What does the periodic law state?

Answer 9

The repeating chemical and physical properties of elements change periodically with the elements atomic number

Question 10

What are elements classified as?

Answer 10

Metals, nonmetals, and metalloids

Question 11

What are they classified according to?

Answer 11

Their properties

Question 12

What is a characteristic that helps determine what category an element belongs in?

Answer 12

The number of electrons in the pure energy level of an atom

Question 13

Where are metals found on the periodic table?

Answer 13

On the left of the zig zag line

Question 14

What do atoms of most metals have?

Answer 14

Few electrons in their outer energy level

Question 15

What are most metals at room temperature?

Answer 15

Solids

Question 16

Where are nonmetals found in the periodic table?

Answer 16

On the right of the zig zag line

Question 17

What do atoms of most nonmetals have?

Answer 17

An almost complete set of electrons in their outer energy level

Question 18

How many nonmetals are a gas at room temperature?

Answer 18

More than half

Question 19

What are many properties of nonmetals?

Answer 19

The opposite of metals

Question 20

What is another name for metalloids?

Answer 20

Semi conductors.

Question 21

What are metalloids?

Answer 21

The elements that border the zig zag line

Question 22

What do atoms of metalloids have?

Answer 22

About half a set of electrons in their outer energy level

Question 23

What do metalloids have properties of?

Answer 23

Metals and nonmetals

Question 24

What does each square on the periodic table include?

Answer 24

An elements name, the chemical symbol, atomic number and atomic mass.

Question 25

What are elements named after?

Answer 25

People, places, states, countries, etc.

Question 26

How many letters does the chemical symbol have?

Answer 26

One or two

Question 27

What is special about the first letter in a chemical symbol?

Answer 27

They are always capitalized

Question 28

What do the newest elements have?

Answer 28

Temporary 3 letter symbols

Question 29

What is a period?

Answer 29

A horizontal row of elements

Question 30

What happens to the physical and chemical properties as you move across the period?

Answer 30

They follow a repeating (periodic) pattern

Question 31

What is a group/family?

Answer 31

Each vertical column of elements

Question 32

What do elements in the same group have?

Answer 32

The same physical and chemical properties