Periodic Table Flashcards
The placement of an element in the periodic table gives an indication of the…?
Chemical and physical properties
Elements are arranged in the order of
Increasing atomic number
The number of protons in an atom identifies…
The element
The number of protons always stays the same except through…
Nuclear reactions
Atomic mass is?
The sum of protons and neutrons in the nucleus
Mass number is?
Weighted average of the different isotopes of that element
Elements are classified by
Their properties and locations on the periodic table
What are the the 4 types of elements on the periodic table
1.metals, 2. Non-metals, 3. Metalloids, 4. Nobles gases
What are physical properties of elements(6)
- Density, 2. Conductivity, 3. Malleability, 4. Hardness, 5. Ductility, 6. Solubility
What is a chemical property
Chemical properties describe how an element behaves in chemical reactions
Elements are arranged into…?
Periods and groups
Elements of the same period have…
The same number of occupied energy levels
Elements of the same group have…
The same valence electrons configuration and similar chemical properties
As you progress down a group what happens? (4)
1.Atomic radius increases, 2. Electronegativity decreases, 3. First ionization energy decreases, 4. Metallic characteristics increases
