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Flashcards in Atoms & Elements Deck (40):
1

How many subshells can the third shell be divided into?

3 subshells - S,P,D

2

How many subshells can the second shell be divided into?

2 shells - S,P

3

How many subshells can the first shell be divided into?

1 subshell - S

4

What are the four types of orbitals?

S,P,D,F orbitals - Smart People Don't Forget

5

What is the letter representing the 1st, 2nd, 3rd and 4th shells?

1st shell - K
2nd shell - L
3rd shell - M
4th shell - N

6

What is similar about elements in a particular group?

They have the same number of outer shell electrons, similar chemical properties, and they react the same

7

How does the number of electrons in the valence shell predict the place of an element in the periodic table?

Usually it is the last digit of the elements group number

8

What does the number of shells occupied by electrons tell us about an elements position in the periodic table?

The period an element is in is shown by the number of shells occupied

9

When do excited electrons release excess energy as light? When it jumps up or moves down?

The electron releases excess energy as light when they return, jump down, to ground state.

10

What is the maximum number of electrons that can be held in the first 4 shells?

Shell 1 - 2
Shell 2 - 8
Shell 3 - 18
Shell 4 - 32

11

What group are alkaline earths?

Group 2

12

What is the charge of the ions formed by group 1 elements?

+ 1

13

What is the electron charge of an atom?

Neutral charge

14

Define isotopes

Atoms of the same element with different numbers pf neutrons

15

Define organic

Describes a compounds that is or was apart of a living thing, containing carbon

16

Define periodic table

A list of all the known elements arranged in order of increasing atomic number

17

Define element

A substance composed of atoms with the same atomic number; 118 are know to exist

18

Define organic molecules

Molecules that have a skeleton of carbon atoms

19

Define ground state

The lowest energy arrangement of an atoms electrons in energy levels (shells)

20

Define transition elements

A special block of metallic elements covering elements 3 - 12

21

Where is the mass number shown on an elements symbol?

Above the atomic number, top ^

22

Define periods

Horizontal rows of the periodic table

23

Define mass number

The number of particles in the nucleus (protons + neutrons)

24

Define lanthanides

A special block of metallic elements with atomic numbers 57-71

25

Define indirect evidence

Evidence that does not involve direct observation

26

Define halogens

Group 17 elements

27

Define fluoresce

To absorb UV light and re-emit light that is visible

28

Define electron configuration

Arrangement of electrons in electron shells

29

Define atomic number

The number of protons in an atom

30

Define actinides

A special block of metallic elements with atomic numbers 89-103

31

Where is the atomic number shown on an elements symbol?

Below the mass number, bottom \/

32

Define nucleus

The heavy core at the centre of an atom, made of protons and neutrons

33

Define noble gases

Also known as inert gases, group 18 elements known for their stability (lack of reactivity)

34

Define inert gases

Another name for the noble gases of group 18

35

Define groups

Vertical columns of the periodic table

36

Define excited (electrons)

Electrons that have jumped to a higher energy level

37

Define electron shells

Also known as energy levels; the regions surrounding the nucleus where electrons may be found

38

Define atoms

The particles that make up all materials

39

Define allotropes

Forms of the same element that have different molecular structures and therefore different properties

40

How do you find the number of protons in an atom?

The atomic number is the same as the number of protons