Atoms, Compounds And Isotopes

Question 1

What does the atomic number tell us?

Answer 1

Number of protons and is equal to the number of electrons.

Question 2

How do you work out the number of neutrons in an element?

Answer 2

Subtract the atomic number from the mass number

Question 3

Explain what a compound is and give and example?

Answer 3

Compounds are formed when atoms of two or more elements are chemically combined together. For example, carbon dioxide is a compound formed from a chemical reaction between carbon and oxygen.

Question 4

What is the definition of an isotope?

Answer 4

Isotopes are: different atomic forms of the same element, which have the same number of protons but a different number of neutrons.

Question 5

Name a popular pair of isotopes…

Answer 5

Carbon-12 and Carbon-14
They both have 6 protons and 6 electrons each
C12 has 6 neutrons and C14 has 8 neutrons

Question 6

What does the mass number tell us?

Answer 6

Total number of protons and neutrons