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States of matter, Atomic structure and periodic table Flashcards | StudBud
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States of matter, Atomic structure and periodic table
States of matter, Atomic structure and periodic table
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1
Each horizontal row on the periodic table is called what?
Group
column
Elements
Period
2
Which of the following statement is
incorrect
regarding this experiment
Ammonia moves faster because its lighter
Hydrogen chloride gas moves slower because its less dense.
White powder formed is Ammonium chloride
White ring is formed nearer to the concentrated hydrochloric acid
3
The electron configuration of Magnesium is
2,6
2,8,2
2,8,6
2,2
4
Ammonia gas is less dense than Hydrogen chloride
False
True
5
Diffusion is the movement of particles from lower concentration to high concentration
True
False
6
The number of neutrons in Uranium is 134
False
True
7
Boiling point of ethanol is 87
0
C
True
False
8
separation of mixtures by chromatography is based on their,different
Boiling points
Density
solubility
Melting points
9
Boiling point of A is 120
0
C and Melting point is 10
0
C.What is the physical state of the compound A at 30
0
C
Gas
Solid
Liquid
Plasma
10
The number of electrons in one chlorine atom is
35
18
17
35.5
11
The number of protons in Sc atom
21
12
45
34
12
The number of protons in an atom is always equal to the Number of Neutrons
True
False
13
Separation of ethanol from mixture of ethanol and water can be carried out by
Chromatography
Fractional distillation
Filtration
Crystallisation
14
Isotopes have same proton numbers
False
True
15
Which accurately describes nonmetals?
Often used in computer parts
Both malleable and ductile
Always solid at room temperature
Poor conductors of electricity
16
Atom is the smallest particle
True
False
17
Lead has 4 isotopes. Calculate the Relative atomic Mass of Lead using the data in the table.
208.431
204.534
206.345
207.241
18
Groups on the periodic table are arranged vertically.
True
False
19
How confident are you in your knowledge of the periodic table?
Somewhat confident, but I need to study more.
I am confident in my knowledge
I am so confident that I can teach my peers about it.
Not confident, yet. I need to study more and ask for help.
20
Read the following question. Which of the five writers is using the ink that matches the sample from the letter
P
M
R
G
21
How are elements in the periodic table organized?
Increasing number of protons
Most reactive to least reactive
Based on physical and chemical properties
Alphabetically
22
Look at the diagram below and classify each one as element compound or Mixture
A-Mixture, B-Mixture, C-Element, D-Mixture
A-Compound, B-Mixture, C-Element, D-Element
A-Mixture, B-Mixture, C-Element, D-Element
A-Element, B-Mixture, C-Element, D-Element
23
Compounds are formed when 2 or more elements chemically combine.
True
False
24
what name is given when a solid is changed to a gas
Melting
Sublimation
Freezing
Boiling
25
Boiling point of B is 2220
0
C and Melting point is 360
0
C.What is the physical state of the compound B at 175
0
C
Plasma
Gas
Solid
Liquid
