The Periodic Table

Question 1

If there are 4 PROTONS in the nucleus of an atom, which element is it?

Accepted Answer

Beryllium

Question 2

Oxygen only makes up approximately what percentage of the air we breath?

Accepted Answer

21%

Question 3

How many elements are there in the periodic table?

Accepted Answer

118

Question 4

Which of the following has the chemical symbol 'W'?

Accepted Answer

Tungsten

Question 5

Which of these is NOT evidence for a chemical reaction?

Accepted Answer

It's state becomes solid

Question 6

'Br' is the chemical symbol for which element?

Accepted Answer

Bromine

Question 7

What is the first element in the periodic table?

Accepted Answer

Hydrogen

Question 8

Which of the following states is generally the most dense?

Accepted Answer

Solid

Question 9

What is the atomic number of NITROGEN?

Accepted Answer

7

Question 10

Sodium Chloride if commonly known as what?

Accepted Answer

Salt

Question 11

An elements atomic number also gives us it's....

Accepted Answer

Number of Electrons, Number of Protons

Question 12

A reaction that absorbs energy from its surroundings is also called ....

Accepted Answer

an endothermic reaction

Question 13

Which of the following does not exist in the periodic table?

Accepted Answer

Metapods

Question 14

Why does an exothermic reaction feel hot?

Accepted Answer

gives energy to your hand

Question 15

Find the mistake...

Accepted Answer

Nitrogen and Oxygen have been switched

Question 16

Which of the following states can you compress?

Accepted Answer

Gas Only

Question 17

What is the chemical symbol for Gold?

Accepted Answer

Au

Question 18

In an atom, the number of electrons present also equals the number of....

Accepted Answer

Protons

Question 19

How many elements are NATURALLY OCCURRING?

Accepted Answer

98

Question 20

Which element is found the most in nature?

Accepted Answer

Carbon

Questions 20