How can elements be divided?

Metals, Nonmetals and Metalloids

Which is the best description of a compound?

Substance composed by one element.

Not chemically combined substances.

What does the atomic number represents?

The number of protons the nucleus has.

They are substances that can´t be separated

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Atoms

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#Atoms, history and parts

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Questions 20

Answers

1
hat´s the name of the atom model proposed by Rutherford?
Billiard Ball
Shells Model
Solar System
Electron Cloud
2
Who proposed the billiard ball model?
Thomson
Dalton
Bohr
Rutherford
3
How can elements be divided?
Sticky, Soft, Hard
Metals, Nonmetals and Metalloids
Ductile, Malleable and Shinny
Metalloids, Metals and Shinny
4
How are compounds represented?
By letters
By formulas
By numbers
By drawings
5
What does the word atomos mean?
indivisible
the volume of the object
small part
study of matter
6
How are the columns in the Periodic table called?
Metalloids
Actinide series
Periods
Families
7
When did Bohr propose his model?
1997
2000
1913
2016
8
Which are the four elements?
mass, volume, air and fire
water, soil, fire and density
water, earth, matter and mass
earth, water, air and fire
9
How is the chart in which information about elements can be found?
Periodic Table
Element chart
Inactive elements
Symbols and formulas
10
When did Democritus propose his theory?
After World War I
In the 1900´s
In the 1200´s
In the 5th century
11
Which is the best description of a compound?
Metals and water together
Substance composed by one element.
Two elements combined chemically.
Substance that can be separated.
12
How are the Periodic Table Rows called?
Families
Periods
Metals
Metalloids
13
Where are Lanthanide series and Actinide series located in the Periodic Table?
On the right side
On the left side
At the top
At the bottom
14
What is the name of the model Thomson proposed?
The Shells model
The Plum Pudding model
The Solar System Model
The Electron Cloud Model
15
Which part of the atom does not have charge?
electron
proton
nucleus
neutron
16
What model is used today?
the Pudding Model
the Solar System Model
The Electron Cloud Model
The Shells Model
17
What is a mixture?
Not chemically combined substances.
Substances that are alone.
Elements that have a symbol
Substances that have many properties.
18
What do scientists use to study the atoms?
the nucleus
the electrons
models
the periodic table
19
What does the atomic number represents?
The number of cells the nucleus has.
The number of matter the nucleus has.
The number of protons the nucleus has.
The number of electrons the nucleus has.
20
What are elements?
They are minerals found in nature
They are substances that can´t be separated
They are substances that can be divided
They are chemical formulas.

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