Intro to matter
This is the smallest unit of matter
What is an atom?
These are the vertical columns on the periodic table
What are groups/families?
Elements become these when they lose or gain an electron
What are ions
Reduction is _____________
What is "Loss"?
The number of Nitrogen atoms in AgNO3
What is 1?
This subatomic particle has a negative charge
What is an electron?
An increase in this value can be seen while moving from left to right across a period
What is the atomic number?
this is the name for positive ions
when Ca2+ becomes Ca
What is reduction?
This law states that "matter can neither be created nor destroyed"
What is the the law of conservation of matter/mass?
This value can be found on the periodic table and denotes the number of protons in an element
What is the atomic number?
This group of elements is characterized by having some properties of typical metals and some of typical non metals
what are metalloids
the name of this compound: Li2O
what is Lithium Oxide?
K → ________________________ + e-
What is K+
balance:
H₂ + O₂ → H₂O
2 H₂ + O₂ → 2 H₂O
This value is calculated by adding the atomic number and number of neutrons together
What is the mass number?
Elements in the same group will be similar in this way
What are chemical properties?
The chemical formula for an ionic compound formed from Mg2+ and Cl-
What is MgCl2?
Cu2+ + ________________________ → Cu:
What is 2e-?
Balance
___ K + ___ O2 → ___ K2O
4 K + O2 → 2 K2O
Isotopes of an element will have varying amounts of this subatomic particle
What are neutrons?
This group is the furthest to the right on the periodic table
What are the noble gases?
The chemical formula for the ionic compound formed from Ca2+ and PO43-
What is Ca3(PO4)2?
In the following Chemical reaction, this element is the least reactive:
Cu2+ (aq) + Mg(s) → Mg2+ (aq) + Cu(s)
What is Copper?
Balance
Al + O₂ → Al₂O₃
4 Al + 3 O2 → 2 Al₂O₃