Unit 3 Marker Board Review

Make sure you have the following ready•Marker board and marker

•Periodic table

1. ________________ created the first periodic table which was arranged according to atomic _____.

2. In the modern periodic table, elements are ordered by atomic ________. ______________ was the first scientist to order them this way.

Dmitri Mendeleev

mass

numberHenry Moseley

3.       __________ law says that when the elements are placed in order by atomic number there is a periodic repetition of their chemical and physical properties.

 4.     ____________________ determine the identity

of an element and the atomic number.

Periodic

Number of protons

5.      Groups ___________________ are known as the representative elements because…

6.      The valence electrons of representative elements are in the __ and __ orbitals.

1, 2, 13-18

They act…..

ps

Metals

7. Group 1: called the _______ metals. They have electron configurations ending in __. Properties of these elements include:

a. Stored in ___ due to extreme reactivity with oxygen (contains the most reactive metal)

b. Consistency is ________.c. Good conductors of ____ and ___________.

Alkalis1

oil

butterheat electricity

Extremely reactive, soft in nature

8. Group 2: called the _____________ metals. Their electron configurations end in __. Properties of these elements include:

a. generally ____ solids.b. _______ and denser than alkali metalsc. Less _______ than alkali metals.

Alkaline-Earths2

Here are some propssoft

Harderreactive

9. The ___________ metals are a large group of elements in the middle of the periodic table. Properties of these elements include:

a. Transition metals are also known as the __-block elementsb. General properties (similar to other metals) are…

c.Most transition metals are _____ solids with _____ melting points.d.Transition metal unpaired d-electrons have the ability to move into

the __ level. Because of this, many transition metals can form several different charged ions.

e. Transition metals contain the __________ metals (like gold & silver)

transition

d

Properties…

hard high

s

precious

10. The ______________ metals are also known as the f-block. The elements in this block are very ____________.

inner transition

radioactive

Nonmetals11. Group 17 is the _________ family. Their electron configurations

end in _____. Properties of these elements include:

a. Very _________ nonmetals – they are always in compounds, never alone.

b. Halogens tend to gain or share 1 electron because they have __ valence electrons.

d. The most reactive nonmetal, _________, is in this family.e. Exist in all 3 _______ of matter (s, l, g)f. React readily with ________, especially alkali, to produce salts.

(halogen = salt former)

halogens2p5

propertiesreactive

7fluorine

statesmetals

12. Group 18 elements are the _______ gases. Their electron configurations end in _____. Properties of these elements include:

a. Called inert or ______ gases because….

  14. The reason any group has similar properties is because

they have the same number of _________________

nobles2p6

Nonreactive, gases,

nobleTheir outermost energy level is full meaning they don’t need more electrons from other elements.

Valence electrons

Hydrogenonly element considered to be a chemical family all by itself.

15. Hydrogen is placed in group 1 because it has __ valence electron.

16. Hydrogen has properties of group 1 and group ________.

1

17

Match the family name to the location:

20. ___ lanthanides and actinides (inner transition metals)21. ___ alkali and alkaline earth metals22. ___ halogens 23. ___ noble gases24. ___ transition metals

25. Label the s, p, d and f blocks on the periodic

table.

CADEB

sp

d

f

26. An element has the electron configuration [Ne]3s23p5. What family is this element in? _________ What group? ____________ What period? __ What is this element? __________________

173

halogen

Chlorine

Match the element with the family to which it belongs:

27. neon ______

28. magnesium ______ a = alkali metals

29. fluorine ______ b = alkaline earth metals

30. silver ______ c = transition metals

31. potassium ______ d = halogens

32. iron ______ e = noble gases

E

B

D

C

A

C

Use the following words to fill in the blanks.A = alkali metals B = alkaline-earth metals C = transition metals

D = halogens E = noble gases

33. The ____ have electron configurations that end in s2. 34. The ____ are soft enough to cut with a knife. 35. The ____ contain the precious metals. 36. The ____ are the most reactive nonmetals. 37. The ____ are stable and unreactive due to their full s and p orbitals. 38. The ____ have a name that means salt-former.

BACDED

Periodic Trends 39. As you move down a group on the periodic table,

atomic radii generally _______________ and across a period it generally __________________.

gets largergets smaller

Periodic Trends 40. Define ionization energy.  41. Ionization energy generally _____________ across a period and

______________ down a group. 42. Which family of elements has the highest ionization energy?

______________  43. The tendency for an atom to attract electrons of another atom is

called __________________. It generally ___________ as you move left to right across a period and __________ down a group.

Energy needed to remove an electron from an atom

gets largergets smaller

Noble gases

electronegativity increasesdecreases

Circle the atom with the LARGER atomic radius

44. cesium potassium

45. sodium aluminum

46. cesium helium

Circle the atom with the LARGER ionization energy

47. boron oxygen.

48. nitrogen phosphorous

49. chlorine selenium

Circle the atom with the LARGER electronegativity

50. calcium potassium

51. fluorine bromine

52. phosphorus oxygen

53. Be prepared to describe how the trends change across or down the periodic table.