Chemistry Unit 6 Isotopes

How many neutrons does a Sodium 24 isotope have?

13

Which of the subatomic particles is the lightest?

electrons

Isotopes are atoms of the same element with different #'s of _________ & therefore different ___________

neutrons & mass number

Most of an atom's mass is found in the

nucleus

An element is defined by its number of

protons

In a neutral atom the amount of electrons is equal to

protons

Found in the nucleus of the atom

protons and neutrons

Which of the subatomic particles is the heaviest?

protons and neutrons have equal mass

Each electron contributes how much towards the mass number?

0

The each proton/ neutron contributes how much towards the mass number?

1

How many neutrons does an atom of the isotope Neon-22 have?

12

How many protons does this isotope of titanium have?

22

How many neutrons does a Calcium 48 isotope have?

28 neutrons

How many electrons does a Copper atom have?

29

How many neutrons does the isotope of lithium have?

5

An atom with atomic number 6 would have how many protons?

6

What is the name of the pictured isotope?

Copper-63

Where are electrons of an atom found?

Electron Cloud

True or False: Two isotopes of carbon are carbon 12 and carbon 14. These isotopes differ from one another by two protons .

False