Periodic Table
The horizontal rows in the periodic table
Periods
What types of elements do ionic bonds form between?
metal and non-metal
Which subatomic particle has a positive charge?
proton
How many iron atoms are there in the compound Fe₂O₃?
2
What is the smallest subatomic particle?
electron
The group in the periodic table where noble gases are found
group 18
Name of this ionic compound
Al2O3?
Aluminium oxide
How many electrons can fit in the 2nd shell
8
What is the coefficient in the balanced equation: 3H₂ + O₂ → 3H₂O?
What subatomic particles are found in the nucleus of an atom
protons and neutrons
As you move from left to right across a period on the periodic table, what generally happens to the atomic radius of the elements
decreases
Metals always _______ electrons when forming ions
Lose
Number of valence electrons in magnesium
2
How many molecules of water are produced in the reaction: 2C₆H₆ + 15O₂ → 12CO₂ + 6H₂O?
6
Which element has the symbol "Na" on the periodic table?
Sodium
Which element is the lightest transition metal on the periodic table
scandium
The formula for calcium chloride
CaCl2
Isotopes are atoms of the same element that have different numbers of _________
neutrons
Is this balanced or unbalanced?
C₆H₁₂O₆ → 6CO₂ + 6H₂O?
unbalanced
Balance the equation: H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
how many neutrons does cadmium have?
66
How does ionic bonding occur?
when one atom donates electrons (forming a cation) and another atom accepts those electrons (forming an anion), resulting in the electrostatic attraction between oppositely charged ions.
The number of the periodic table that tells you how many protons and neutrons an atom has
atomic mass
Balance the following equation Fe + O₂ → Fe₂O₃
4Fe + 3O₂ → 2Fe₂O₃
What is the name of a reaction type where the reactants "swap partners" and what is often formed from the reactions?
Double displacement & precipitations