Periodic table Flashcards
What is the difference between protons, electrons, and neutrons?
Protons are positively charged, electrons have a negative charge, and neutrons don’t have a charge
How many valence electrons are in Alkaline Earth Metals?
2
What is an Ionic bond?
Nonmetal + Metal
What are valence electrons?
The outermost shell of the atom and they are able to interact with other atoms to form chemical bonds
Which elements are the least reactive?
Noble gases
How many valence electrons does the Nitrogen group have?
5
What is the difference between stable and unstable isotopes?
Stable have a nuclei and are non-radioactive
Unstable have an unstable nuclei and are radioactive
Which elements are the most reactive?
Alkali metals
What bond is a covalent bond?
Nonmetal + Nonmetal
The groups or columns on the periodic table organize elements with the same number of what?
Valence electrons
What ions are negatively charged?
Anion
What is another name for outer orbital?
Shell
Which elements on the periodic table are the LEAST reactive?
Noble gases
What is the heat conductivity for metals, metalloids, & nonmetals?
High for metals, intermediate for metalloids, and low for nonmetals
How many valence electrons does Noble Gases have?
8
How many valence electrons does an alkali metal have?
One
What are characteristics of an Anion?
- Negatively charged
- More electrons than protons
What are “groups”?
Each vertical column in a periodic table. Each element in a group has the same number of electrons in their outer orbital
What is the electrical conductivity for metals, metalloids, and nonmetals?
High for metals, varies for metalloids, and low for nonmetals
How many elements are on the periodic table?
118
Who is Dmitri Mendeleev?
A russian chemist who formulated the periodic laws and created the original periodic table in 1869
What are characteristics of a Cation?
- Positively charged
- More protons than electrons
What ions have more electrons than protons?
Anion
Which elements on the periodic table are the MOST reactive?
Alkali metals
What is the ionization energy for metals, metalloids, and nonmetals?
Low for metals, intermediate for metalloids, and low for nonmetals
What are “periods”?
Every row across in a periodic table. Each element in a period has the same number of shells
What is the difference between a heterogenous and homogenous mixture?
In a heterogenous mixture, you can see the different components in them but in a homogenous mixture, you cannot
What ions are have more protons than electrons?
Cation
What is a Covalent bond?
Nonmetal + Nonmetal
What is a molecule?
Two or more atoms bonded together. It can also consist of two atoms of the same element
Which russian chemist formulated the periodic laws and created the original periodic table in 1869?
Dmitri Mendeleev
How many valence electrons does the Oxygen group have?
6
What is the universal solvent?
Water because it is polar
How many protons does an iron atom have?
26
How many elements does the original periodic table have?
28
How many valence electrons does the Carbon group have?
4
What ions are positively charged?
Cation
How many valence electrons do Transition Metals have?
1 or 2
What bond is an ionic bond?
Metal + Nonmetal
What is a polar molecule?
A molecule in which one end is slightly positive, while the other is slightly negative
How many valence electrons does the Boron group have?
3
What is an Isotope?
A variation of the same element with a different number of neutrons in the nucleus
