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Chemistry & Periodic Table Flashcards | StudBud
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Chemistry & Periodic Table
Chemistry & Periodic Table
26 terms
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#periodic table #atoms, #valence, #equations
Flashcards
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Questions
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Answers
1
If a substance turns litmus pH paper red is it acidic, neutral or basic
acid
basic
neutral
2
What is the chemical symbol for this electron configuration 1S
2
,2S
2
,2P
6
,3S
2
,3P
6
Argon
Krypton
Chlorine
Bromine
3
How can you tell number of Neutrons
Atomic Mass - Atomic Symbol
Atomic Mass - Atomic #
Equal to Atomic #
Atomic # - Atomic Mass
4
Particles of ___ are ____packed, but are far enough apart slide over one another.
gas, tightly
plasma, loosely
liquid, tightly
solid, loosely
5
_____ is an ionized gas & is a good conductor of electricity & is affected by magnetic fields
matter
liquid
plasma
gas
6
What is the electron configuration for Oxygen?
1S2 2S1 2P3
1S3 2S3 2P6CL10
1S22S2 2P4
7
When one atom steals an electron
Ionic bond
Valence bond
Best friends bond
Covalent bond
8
How many electrons fit in the first 4 valence levels?
5,9,13,17
6,10, 14, 20
2, 4, 8, 18
2,6,10,14
9
Which of the following is an example of synthesis?
H2+O -->H2O
H20 --> H2 +O
H2O+C6 --> H2C6 +O
10
How many electrons can the 1st shell hold
3
6
8
2
11
What are the 6 Noble Gases?
He, NE, AR, KR,XE,RN
He, Ne, H, AR, Xn, Rn
H, He, Ne, Ar, Rn, Xe
Ne, Ar, He, Xe, Rn, Kr
12
When electrons are shared
Holding hands
Ionic bond
Covalent Bond
Sharing bond
13
What is the atomic symbol for Carbon
O
P
CL
C
14
What is the charge of an Electron
Valence
Neutral
Positive
Negative
15
Which of the following is an example of decomposition?
H20 --> H2 +O
H2O+C6 --> H2C6 +O
H2+O -->H2O
16
When a metal explodes in a reaction
Chemical change
bad change
Physical change
No change
17
What is a mole?
amount of matter in an object
amount of mass in an object
force per unit
Avogadro's number 6.02 x 10 23
18
What is the center of the atom called?
Protons and Neutrons
Nucleus
Shells
Electron
19
The atomic number tells you the number of
Neutrons
Electrons
Valence
Protons
20
A bond that forms when two atoms share two electrons is called a . . .
covalent bond
ionic bond
metallic bond
double bond
21
The number of protons = # of
Electrons
Nucleus
Neutrons
Outer shell
22
When there is a change in color but not identity of substance
Neutral change
Chemical change
Physical change
good change
23
An example of a physical change is
temperature, color and solute
something that can not be changed
states of matter, size shape change
24
The electrons in the outer shell are called
Electrical
Pairs
Valence
Sharing
25
What is in the center of the nucleus
electrons and nucleus
neutrons and electrons
neutrons and protons
electrons and protons
26
Two most important elements to humans
Sodium and Helium
Oxygen and Carbon
Boron and Neon
Hydrogen and Cloride
