Naming
K₂O
Potassium oxide
Aluminum fluoride
AlF₃
When an electrons becomes excited, it jumps energy levels. To return to its original energy level it has to release energy in the form of light. What is this particle of light called?
a photon
Do cations gain or lose electrons?
LOSE
Which of the following shows an ionic bond? CO2, SO4, LiCl
LiCl
CaBr₂
Calcium bromide
Ammonium chloride
NH₄Cl
Define aqueous.
solution dissolved in water
How many electrons does a Beryllium ion have?
2
***DAILY DOUBLE***
Why do atoms want to form ions?
to be stable/obtain a full outer shell
Mg(OH)₂
Magnesium hydroxide
Cobalt(III) phosphate
CoPO₄
When electrons occupy the lowest possible energy levels, the electron is said to be in the _________ ___________.
ground state
An atom that loses 4 electrons will have a charge of
(a) –4 (b) +4 (c) 0
+4
Which of the following chemical equations shows a precipitation reaction?
(a) NaCl(aq) + KNO₃(aq) → NaNO₃(aq) + KCl(aq)
(b) HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)
(c) Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g)
(d) CaCl₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2NaCl(aq)
(d) CaCl₂(aq) + Na₂CO₃(aq) → CaCO₃(s) + 2NaCl(aq)
Fe₂O₃
Iron (III) oxide
Copper (II) oxide
CuO
When 2 aqueous solutions are combined, they form an insoluble solid. What is this solid called?
precipitate
Anions have a (POSITIVE/NEGATIVE/NEUTRAL) charge. Meaning they are (GAINING/LOSING) electrons
negative charge
gaining electrons
Noble gases do not become ions, why is this?
They already have a full shell/are stable.
Fe(NO₃)₂
Iron (II) nitrate
Nickel (II) phosphate
Ni₃(PO₄)₂
The pattern of light seen when metals are heated is called what?
line spectrum
Define the term: ION
An atom that has lost or gained electrons.
A photon of light has a wavelength of 125.0 nm. Calculate the energy of one photon in joules using the following formula:
E = hc/λ
Planck's constant (6.626 x 10^-34)
speed of light (2.998 x 10^8)
1.589 x 10^-27 J