Smart Edition Flashcards
Which phase changes absorb energy
Which release energy
How do we know the difference
Melting, vaporization, sublimation all absorb energy ( The phase has more energy after the change)
Deposition, freezing, condensing all release energy ( Less energy in the system after phase change)
When heating or cooling a substance , the temperature will not change while a substance…..
Is under going a phase change
What happens to the shape and volume of helium gas when it’s transferred from a tank to a balloon
Both shape and volume change
What do the First & Second Plateau on a heating curve represent?
First: Solid to Liquid & vice versa
Melting / Freezing
Second: Liquid to Gas & vice versa
Boiling / Condensation
A substance will ______ at the same temperature.
Melt & boil
Condense & boil
Freeze & sublime
Freeze & condense
Condense & boil
A ________ reaction is a type of reaction where an acid and a base react to form a salt and water
Neutralization
A ____ is typically defined as an ionic compound that includes any cation except H+ and any anion except OH-
Salt
Bronsted-Lowry acid =
Bronsted-Lowry base =
Protons H+ donor
Proton H+ acceptor
Conjugate base is the product formed when….
Conjugate acid is the product formed when…
Conjugate base = product formed when acid loses H+
Conjugate acid = product formed when base gains H+
To find a conjugate Acid from a Base:
Add 1 H+
This mean add one H & a “+” charge
Find the Conjugate Acid from the Base
OH -
HOH or H²0
Find the Conjugate Acid from the Base
NH³
NH⁴+
Find the Conjugate Acid from the Base
HCO ³ -
H²CO³
Find the Conjugate Acid from the Base
C²H⁵COO‐
C²H⁵COOH
To find the Conjugate Base from an Acid
Remove 1 H+ from the acid
Find the Conjugate base from the acid
HNO³
NO³-
Find the Conjugate base from the acid
H²SO⁴
HSO⁴-
Find the Conjugate base from the acid
HPO ²-
⁴
PO ³-
⁴
Find the Conjugate base from the acid
CH³COOH
CH³COO‐
Find the Conjugate base from the acid
NH⁴ +
NH ³
An atom has 28 protons, 32 neutrons, and 28 electrons. What is the name of this isotope?
Nickel-32
Nickel-60
Germanium-56
Germanium-60
The number of protons, 28, gives the atomic number, which identifies this atom as nickel. The mass is the number after the dash in the isotope name, which is determined by adding the numbers of protons and neutrons (28 + 32 = 60).
