Why would it be difficult to determine the properties of a new synthetic element?

The element's nuclei would break apart very quickly

Ductile, Malleable, good conductors of electricity and thermal energy.

What did Ernest Rutherford discover about the atom?

Positive charge in the nucleus of the atom

What is the atomic number?

the number of protons in the nucleus

What is malleability?

Can be easily hammered into thin sheets

Ductility is the ability of metal to

bend or be pulled into thin wires

Negatively charged subatomic particle around the nucleus

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Ch.4 Elements & The Periodic Table

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Questions 25

Answers

1
How do you get Atomic mass?
Proton + Cloud
Cloud + Neutron
Proton + Neutron
Protron and Electron
2
Elements in the same group on the periodic table have similar
Properties
Atomic Numbers
Colors
Sizes
3
Noble gases are inert or nonreactive because they have
no charge.
no atomic mass.
a superiority complex.
a full valence shell.
4
What groups are transition Metals
3-12
1-2
4-18
14-18
5
Who discovered the electron?
J. J. Thompson
Dalton
Mrs. Vedvick
Rutherford
6
Why would it be difficult to determine the properties of a new synthetic element?
The element would lack properties of ordinary elements
The element would not fit in the periodic table
The element's nuclei would break apart very quickly
The element would combine the properties of the nuclei
7
The original Periodic Table was arranged by order of
decreasing atomic number
increasing atomic number
decreasing atomic mass
increasing atomic mass
8
~ Metals Are.. ~
liquid at room temperature and are brittle
found least on the periodic table
Lava, Dirt, Water, Moss, Flowers
Ductile, Malleable, good conductors of electricity and thermal energy.
9
Who developed the atomic theory?
Ariana Grande
Mr. Steffen
J.J. Thomson
John Dalton
10
What did Ernest Rutherford discover about the atom?
The negatively charged electron
Positive charge in the nucleus of the atom
The charge of the electron
The atom is a sphere
11
What is the atomic number?
the number of protons in the nucleus
The number of protons in the electron cloud
The number of neutrons in the nucleus
The number of electrons in the electron cloud
12
What is malleability?
Can hammer into wires
Is shiny
Can be easily hammered into thin sheets
Can be hammered into bed sheets
13
What unit do we measure atomic mass by?
a
amu
gram
mL
14
How many periods on the periodic table
3
7
5
6
15
The first Periodic Table was created by:
Dmitri Mendeleev
Ernest Rutherford
Amadeo Avogadro
Henry Mosely
16
Where are groups in the periodic table?
Top half
Bottom half
Vertical columns
Horizontal rows
17
Ductility is the ability of metal to
bend or be pulled into thin wires
change state
get hot
be hammered out
18
In 1896, Antoine Henri Becquerel, discovered _?
The Theory of Evolution
Radioactivity
The Theory of Relativity
Binomial Nomenclature
19
How is the modern periodic table arranged?
Increasing atomic number
Increasing atomic mass
increasing valence electrons
increasing energy levels
20
Most elements on the periodic table are classified as __________.
Metalloids
Metals
Gases
Nonmetals
21
The alkali metals are the ____ reactive metals.
Alkali Metals
Least
Alkaline Earth Metals
Most
22
What is the charge of a proton?
Positive
Neutrons
idk cause i'm stupid
Negative
23
Which of the following is NOT a type of radioactive decay?
Gamma
Delta
Beta
Alpha
24
What is an electron?
A measurement for energy
Neutral subatomic particle in the nucleus
Negatively charged subatomic particle around the nucleus
Positively charged particle in the nucleus
25
Halogens (Bromine, Chlorine, Flourine)
Group 17
Group 19
Group 18
Group 16

Ch.4 Elements & The Periodic Table Flashcards | StudBud