‫`المملكة العربية السعودية‬
Kingdom of Saudi Arabia
‫وزارة التعليم العالي‬
Ministry of Higher
‫جامعة المجمعة‬
Education
‫عمادة السنة التحضيرية‬
Majma'a University
Preparatory Year Deanship
WORK SHEET (3)
Question (1):Choose the correct answer of the following:1) H2 is :
a- Compound
b- Heterogeneous mixture
c - Element
d- Homogeneous mixture
2) Sand with iron fillings is :
c- Compound
d- Heterogeneous mixture
c - Substance
d- Homogeneous mixture
3) Water is :
a- Molecular
b- Pure substance
c- Homogeneous mixture
d- both a and c
4) Pure substance is :
a- Compound
b- Molecular
c- element
d- both a and c
5) All of the following is physical change except:
a- Ice melting or water freezing
c- evaporation of water
d- metal tarnishes in air
b- Melting of metals
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6) All of the following is chemical properties except :
a- Iron rusting
c- metal tarnishes in air
b- Magnesium reacts with
d- Magnesium metal is grey
hydrochloric acid
7) One of the following is extensive property :
a- Melting point
b- Volume
c – Boiling point
d – Density
8) One of the following is intensive property :
a- Length
c– mass
b- Volume
d – Density
9) The SI unit of length is the:
a- Meter
b- Foot
c- yard
d- liter
10) All of the following are Diatomic molecules except :
a) He
b) HCl
c) F2
d) CO
11) All of the following are Monoatomic molecules except :
b) He
b) HCl
c) Ar
12)
The derived SI unit of the following is:
a- K
b- m2
c- mm
2
d) C
d- s
13)
The derived SI unit of the following is:
b- m
b- mol
c- ms
14)
a-
15)
a-
micro = …………. :
109
b- 10-6
Nano = ………….
109
c- 10-3
d- L
d- 10-9
:
b- 10-6
c- 10-3
d- 10-9
Gega = ………….. :
109
b- 106
c- 10 -9
d- 10-6
17)
a- 346
73 K = ………… oC :
b- 226
c- 200
d- 32
18)
47oC = ………… K :
16)
a-
a- 320
19)
a- 38
b- 226
100 °F= ………….°C:
b- 39
20)
77K= ……………°C:
a- -196
b- -169
c- 273
d- 32
c- 40
d- 45
c- 231
d- 230
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21)
Glass has a density of 2.2 g/cm . the volume occupied by 22g of
glass =…………..
a- 10 cm3
b- 48.44 cm3
c- 0.1 cm3
d- 100 cm3
3
22)The formula of a compound formed between Mn4+ and S2- is:
a- MnS2
b- Mn2S4
c- Mn2S
d- Mn4S2
23) The formula of a compound formed between Na+ and N3- is:
a- Na3N
b- NaN3
c- NaN
d- Na3N3
24)
The formula of a compound formed between Fe3+ and O2a- Fe2O3
b- Fe3O2
c- FeO
d- no one
25)
The formula of compound formed between Cu+1 and O2a- CUO
b- CU2O
c- CUO2
d- no one
26)
Mass number is :
a- No of proton
b- No of proton and electron
neutron
c- No of electron
d- No of proton and
27)
Atomic number is :
a- number of proton
b- number of electron
neutron
c- both a and b
d- number of
28)
All of the following are characteristics of metals except:
a- Malleable
c- conducted to heat
b- Ductile
d- gain electron
4
29)
Cation is :
a- Positively charge ion
b- Negatively charge ion
c- a and d
d- atom lose electron
30)
Anion is :
a- Negatively charge ion
b- Form from nonmetal
c- all answer
d- atom gain electron
31)
The number of neutrons in
a- 19
d- 18
32)
𝟑𝟗
𝟏𝟗𝑿
are :
b- 39
c- 20
The number of neutrons in
a- 11
b- 12
d- 23
33)
The number of electron in 𝟐𝟑𝟓
𝟗𝟐𝑿
a- 92
b- 235
𝟐𝟑
𝟏𝟏𝑿
are :
c- 10
are:
c- 183
d- 143
34)
a) 7
How many significant figures does the number ( 13. 090) has:
b) 6
c) 5
d) 4
35)
a) 3
How many significant figures does the number ( 130,000) has:
b) 4
c) 5
d) 6
34) How many significant figures does the number ( 0.001309) has:
a) 7
b) 6
c) 5
5
d) 4
Question (2):Give an one example from the following set (
, NO3¯, Br , Cl¯ , Na+ ) for the following:
1 ) Anion ……………………… ,
𝟏𝟎𝟗
𝟒𝟕𝑨𝒈
, SO42¯ , K , 𝟏𝟎𝟕
𝟒𝟕𝑨𝒈
3 ) Metal ……………………………….
2 ) Isotopes ………………… and …………………. 4 ) Polyatomic ion
……………..………… 5) cation …………………6) nonmetal……………….
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Question (3):Write the name each of the following compounds :
1 - NF3
………………………………………………………………………………………
2 - KCl
………………………………………………………………………………………
3- FeO
………………………………………………………………………………………
4- Na2CO3∙10H2O :
………………………………………………………………………….
5- CaSO4 . 2 H2O
………………………………………………………………………………………
6- (NH4)3 PO4
………………………………………………………………………………………
7- PCL5
………………………………………………………………………………………
8- CUO
………………………………………………………………………………………
9-
NaBr
………………………………………………………………………………………
10- CS
………………………………………………………………………………………
11- CaO :
……………………………………………………………………………………...
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