Question | Answer |
Who was the Father of the periodic table? | Dmitri Mendeleev |
How is periodic table arranged? | arranged by increasing order of atomic mass |
What is atomic mass? | The average mass of one atom of an element. |
What is a row on the periodic table also called? | Period |
What is each column on the periodic table called? | Group or family |
What do the symbols identify? | The symbols identify the elements |
What is the atomic number? | The number of protons in an atom's nucleus. |
How are modern periodic tables arranged? | Arranged according to atomic number |
Atomic mass is... | the average mass of an element's atoms |
Covalent Bonds often form b/w two or more.... | non-metals |
Chemical Bonds formed when 2 atoms share electrons is... | covalent bond |
The molecule is non polar if it's... | contains polar bonds that cancel out and contains only no polar bonds |
What does each square of the periodic table contain? | each square contains the element's atomic number, chemical symbols, name, and atomic mass |
H20 molecules attract like bar magnets because... | because the oxygen end is negative, and the hydrogen end is positive.. |
Why are molecular compounds poor conductors? | No charge particles are available to move, and electricity does not flow. |
Differences in the attractions between molecules lead to different properties in? | Polar and nonpolar compounds. |
Nonpolar compounds don't what in water? | Dissolve well. |
What is a double bond? | A chemical bond formed when atoms share two pairs of electrons. |