Atomic Structure

Question 1

Atoms are composed of how many subatomic particles?

Answer 1

3

Question 2

What 3 subatomic particles are atoms composed of?

Answer 2

Protons, electrons, and neutrons

Question 3

What is the planetary model used for?

Answer 3

It portrays an atoms mass in the central nucleus

Question 4

Neutrons orbit the nucleus in specific orbits.

Answer 4

False. Electrons orbit.

Question 5

What does the orbital model locate in the central nucleus?

Answer 5

Protons and neutrons

Question 6

Orbital model also depicts what?

Answer 6

Electrons occupying areas of space called orbitals and forming an electron cloud of negative charge around the nucleus

Question 7

Each atom can be identified by its what

Answer 7

Atomic number

Question 8

Atomic number is equal to number of what in the atoms nucleus

Answer 8

Protons

Question 9

All atoms are electrically neutral

Answer 9

True

Question 10

Number of what in any what is equal to its number of what?

Answer 10

Protons, atom, electrons

Question 11

Atomic mass number is equal to its sum of ___ and ___ in the ___ ___

Answer 11

Protons and neutrons in the atomic nucleus

Question 12

Different atomic forms of the same element; differ only in number of neutrons

Answer 12

Isotopes

Question 13

Heavier ___ are ___ and decompose in a more stable form by ___ particles of energy from the ___

Answer 13

Isotopes are unstable, ejecting, from the nucleus

Question 14

Heavy isotopes ejecting particles of energy from the nucleus

Answer 14

Radioactivity