periodic table y10 winter

Question 1

What did Dmitri Mendeleev do?

Answer 1

He created the periodic table to arrange the elements.

Question 2

How did Dmitri Mendeleev arrange the periodic table?

Answer 2

Rows by their atomic mass.
Columns based on valence electrons.

Question 3

How are elements arranged based on atomic number?

Answer 3

Atomic number increases as you go down the table.

Question 4

Atomic number is equal to which subatomic particles?

Answer 4

Protons/Electrons

Question 5

What are the rows in the periodic table called?

Answer 5

Periods

Question 6

What are columns in the periodic table called?

Answer 6

Groups

Question 7

How are the elements placed into columns?

Answer 7

By valence electrons
and similar properties

Question 8

Where are metals and non-metals placed in the periodic table?

Answer 8

<-Metals Non Metals->

Question 9

What group are alkali metals?

Answer 9

Group 1

Question 10

How does lithium react with water?

Answer 10

Lithium reacts violently with water, producing hydrogen gas, which bubbles out of the solution

Question 11

How does sodium react with water?

Answer 11

It reacts vigorously with water to produce a solution of sodium hydroxide and hydrogen gas, which may ignite.

Question 12

How does potassium react with water?

Answer 12

The metal melts and floats across the water surface. The metal ignites

Question 13

Alkali metals are ____ and have relatively ___ melting points

Answer 13

soft
low