Important People in Physics & Chemistry
Whose atomic model is known as "raisin pudding"?
a) A. Einstein. b) I. Newton. c) J. J. Thomson.
J. J. Thomson
What is the most electronegative element in the periodic table?
a) Hydrogen (H). b) Oxygen (O). c) Fluorine (F).
Fluorine (F)
We can find proton and neutron particles in the nucleus of the atom?
True
What is the universal unit for Force?
a) Kilogram (Kg). b) Newton (N). c) July (J).
Newton (N)
How is the quantity of substance measured in the International System (SI)?
a) Mol (mol). b) Grams (g). c) Candela (cd).
Mol (mol)
Who stated the Law of Conservation of Mass?
a) R. Boyle. b) J. Dalton. c) A. Lavoisier.
A. Lavoisier.
How are the elements arranged in the periodic table?
a) According to its mass number (A).
b) According to its atomic number (Z).
c) According to its years of its discovery.
According to its atomic number (Z)
The isotopes with the same element have the atomic mass in common.
False- They share the atomic number.
What is the new name given by the IUPAC for H2O?
a) Water. b) Oxidano. c) Aqueous.
Oxidano
The current periodic system is distributed by how many periods and how many groups?
7 periods and 18 groups
Who discovered the electron?
a) J.J. Thompson. b) Marie Curie. c) E. Rutherford.
J.J. Thompson
Which element on the periodic table is the least electronegative?
a) Fluorine (F). b) Hydrogen (H). c) Francium (Fr).
Francium (Fr)
When an atom gains electrons, it forms an anion.
True
What is a periodic table?
it's a chart that arranges the chemical elements where elements arelisted in order of increading atomic number and lined up so elements demonstrate similar properties by rows and columns.
When an atom loses electrons, it forms a...
a) An anion. b) A cation. c) An isotope.
a cation
What scientific character studied radioactivity and ended up discovering two new elements?
a) H. Bequerel. b) W. Crookes. c) M. Curie.
M. Curie
To which group on the periodic table do the noble gases belong to?
a) Group 17. b) Group 2. c) Group 18.
Group 18
The formula for sulfur (VI) oxide is SO4.
False- It's SO3
The first element made Artifically was..
a)Pltonium (Pu) b) Technetium (Tc) c) Neptunium (Np)
Technetium (Tc)
How are the combinations of oxygen identified with all the elements of the periodic table except those belonging to group 17?
a) Oxygen halides. b) Oxides. c) Neutral salts.
Oxides
Who was the first person cited as the inventor of the modern periodic table:
a) J.J. Thomson b) Dmitri Mendeleev c) A. Einstein
Dmitri Mendeleev
What is the formula for aluminum chloride?
a) AlF. b) AlF3. c) Al2F3.
AlF3.
Currently, the periodic table has 118 elements?
True
a) 2021 b) 2020 c) 2019
2019
Most of the elements on the periodic table are...
a)metals b)nonmetals c)main-group
metals