Atoms, Compounds & Isotopes

Question 0

What does the atomic mass tell you?

Answer 0

The number of protons and neutrons added together.

Question 1

What three particles are found in an atom?

Answer 1

Neutrons, Protons and Electrons.

Question 2

What does the atomic number tell you?

Answer 2

The number of protons/electrons.

Question 3

What is the relative mass of a proton?

Answer 3

1

Question 4

What is the relative mass of a neutron?

Answer 4

1

Question 5

What is the relative mass of an electron?

Answer 5

0.0005 (very small).

Question 6

What is the relative charge of a proton?

Answer 6

1

Question 7

What is the relative charge of a neutron?

Answer 7

0

Question 8

What is the relative charge of an electron?

Answer 8

-1

Question 9

What is a compound?

Answer 9

A substance formed when atoms of different elements are chemically combined together.

Question 10

What is meant by the term isotope?

Answer 10

Isotopes are different atomic forms of the same element, which have the same number of protons but a DIFFERENT NUMBER OF NEUTRONS.

Question 11

True or false?

Isotopes must have the same atomic number but different MASS numbers.

Answer 11

True.

Question 12

True or False?

It is easy to separate the two original elements in a compound out once they have been chemically combined.

Answer 12

False - it is very difficult.