periodic table elements

Question 1

2 smallest elements in the preiodic table?

Answer 1

Hydrogren (1 protons, 1 electron)
Helium (2 protons + neutrons, 2 electrons)

Question 2

How many elements are in the periodic table?

Answer 2

100

Question 3

Each box in the periodic table is called…

Answer 3

A nuclear symbol

Question 4

An element can be identified by…

Answer 4

Identifying the number of protons on the atom and checking its atomic number

Question 5

What are isotopes?

Answer 5

Elements the same equal balance of protons/electrons, but varied number of electrons (e.g carbon-13)

Question 6

Do isotopes affect the chemical reaction of an element?

Answer 6

Neutron = neutral, isotropes chemically react the same way. However, isotropes have different masses.

Question 7

Relative atomic mass:

Answer 7

Calculates the average mass of all the isotopes that make up an element

Question 8

Relative atomic mass formula:

Answer 8

Sum of (Isotrope abundance × Isotrope mass) ÷ Sum of the abundance of all isotropes

Question 9

Symbol for relative atomic mass:

Answer 9

Ar