Lesson 3: The Atomic Structure

Question 1

Elements

Answer 1

• Substances that cannot be broken down into other substances
• Found on periodic table
  Ex, carbon, oxygen

Question 2

What are the three classes of elements?

Answer 2

1. Metals
2. Non-Metals
3. Metalloids

Question 3

Where can metals be found on the periodic table?

Answer 3

• Left side of table
• Groups 1-11
  Ex. Sn, Pb

Question 4

Metal Properties

Answer 4

• Conductible
• Ductile
• Malleable
• Solid at room temp (except mercury)

Question 5

Where can non-metals be found on the periodic table?

Answer 5

• Right side of the periodic table
• Makes up most of groups 14-18

Question 6

Non-Metal Properties

Answer 6

• Grouped together because of their lack of resemblance to metals
• Not very similar to each other

Question 7

Where can metalloids be found on the periodic table?

Answer 7

• On the staircase of the periodic table

Question 8

Metalloid Properties

Answer 8

• Share properties of metals and non-metals

Question 9

Atom

Answer 9

• Smallest part of an element that still has the properties of the element

Question 10

Energy Levels

Answer 10

• Region of space near a nucleus that may be empty or may contain electrons

Question 11

Where are the lowest energy levels found?

Answer 11

• Near the nucleus
• Most tightly bound to the atom

Question 12

Where are the highest energy levels found?

Answer 12

• Away from the nucleus
• Least tightly bound to the atom

Question 13

How many electrons are in each energy level for the Borh diagram?

Answer 13

• 2, 8, 8, 18

Question 14

Atomic Number

Answer 14

• Number of protons in an element

Question 15

Mass Number

Answer 15

• Mass of both the protons and the neutrons in an atom
• Atomic mass rounded

Question 16

Atomic Mass

Answer 16

• Average number of an elements isotopes
• Number below elements symbol

Question 17

Ionization

Answer 17

• The process of gaining of losing electrons
• Forms ions

Question 18

Ion

Answer 18

• Electrically charged atom or group of atoms
• Will have the same number of protons and neutrons as an atom but a different number of electrons

Question 19

Cation

Answer 19

• Positively charged ions
• Usually metal
• Results from an atom loosing an electron

Question 20

Anion

Answer 20

• Negatively charged ions
• Usually non-metal
• Results from an atom gaining an electron

Question 21

Why do elements form ions?

Answer 21

• To fill their volume levels and become stable

Question 22

How can you find the neutrons in an atom?

Answer 22

• Mass number - protons
• Mass number - atomic number