Periodic Table Questions
When Mendeleev created the first periodic table the elements were put in a specific order based on what?
Increasing Atomic Mass
Are atoms the smallest particles in the world ?
Yes, atoms are the smallest particles in the world. They make up matter and matter is anything that takes up space.
What is a Electron ?
An electron is a substance that is made entirely from one type of atom.
The charge of a Molecule ?
* Positive charges
* Negative charges
Who discovered the law of conservation of matter?
Antoine Laurent Lavoisier
Why was Mendeleev's "Periodic Table" useful to scientists?
They could use it to predict properties of unknown elements.
What is inside a atom ?
Inside a atom is a nucleus and inside the nucleus are protons and neutrons. Circling around the nucleus are electrons.
What is the charge of a Electron ?
* Hydrogen Atoms
Cool facts about a molecule ?
A molecule consists of two or more atoms of the same element, or different elements are chemically bound.
What is a Periodic Table ?
The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number, electron configuration, and recurring chemical properties, whose structure shows periodic trends.
What is a atom ?
A small particle that makes up matter and Consists of Protons ( + ), Electrons ( - ) and Neutrons ( N ).
Where is the electrons located at ?
Electrons travel around the nucleus in orbitals, but is it impossible to know both the speed.
Size of a molecule ?
Size 0.74
How is a Periodic Table arranged ?
The chemical elements are arranged in order of increasing atomic number. The rows are called periods and the columns are called groups. Elements with similar chemical properties are in the same group of elements.
Where is the atom located at ?
They are also inside the nucleus and the nucleus is positively charged because of protons.
What is a element ?
Consists of only one kind of atom, Cannot be broken down into a simpler type of matter
Examples of molecules ?
H2O (water)
N2 (nitrogen)
O3 (ozone)
CaO (calcium oxide)
C6H12O6 (glucose, a type of sugar)
Who first proposed the Periodic Table ?
Dmitri Mendeleev
What is the charge of a atom ?
* Electrons
* Protons
* Neutrons
What is the charge of a Element ?
* Ionic charge elements
What is a Molecule ?
A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together.
What is Law of Conservation ?
The Law of Conservation of Matter [Mass] stats that matter cannot be created or destroyed. It changes form.