Chemistry
Die maximale Anzahl Elektronen in der zweiten Schale.
What is 8?
0.006024 has how many sigfigs?
4
Ca2+ has how many electrons?
18
ink is an example of what type of mixture?
homogeneous
adding more electrons to the "sea of electrons" makes metals (stronger/weaker), (shinier/duller), (more/less conductive)
stronger, shinier, more conductive
Welche Zahl entspricht der Anzahl Protonen?
Was ist die Ordnungszahl?
3 changes in states of matter that are exothermic.
Freezing, condensation, deposition
When pressure increases, temperature _______________.
Increases
When the number of moles decreases, pressure _________________________
decreases.
These are often indicators when a chemical change is taking place.
What is heat, an odor, color change, formation of gas or solid?
In einem neutral Atom muss die Protonenzahl die Anzahl der entsprechen
Was sind Elektronen?
The maxiumum number of electrons in the 2nd energy shell
What is 8?
How many orbitals fit in the d sublevel?
what is 5?
Atoms that must be diatomic by themselves
H O F Br I N Cl
Blood is an example of a _____________ mixture
heterogeneous
Wie viele Elektronen haben in der dritte Schale maximal Platz?
Was sind 18 Elektronen?
the more electronegative an atom is, its ionization energy is (high/low)
high
Two different elements that have bonded.
What is a compound?
Alkali metals belongs to this group
What is Group 1
Name all 3 subatomic particles.
What are Protons, Neutrons, and Electrons
Ions are made in what way.
What is losing or gaining electrons?
Making ice cubes from water is what kind of change?
What is a physical change?
Covalent bonding happens generally between these type of elements.
What are nonmetals?
Group or family 17 elements are these.
What are Halogens?
PbSO4 is a(n) (insoluble/soluble) compound.
insoluble.
A covalent bond is formed by
What is the sharing of electrons?
Elements represent unique forms of these tiny things. The building blocks of everything!
What are atoms?
Neutrons have this kind of charge
What is a neutral charge?
These hold together molecules
What are covalent bonds
Lithium, sodium, potassium, rubidium, caesium and francium belong to the family of ______________
What is Alkali metal.
cations are (bigger/smaller) than the neutral atom
smaller
The bond angle, shape, and hybridization of ammonia?
sp3 Trigonal pyramidal 107.5
Aluminum nitrate and sodium sulfite form what two products? Type of reaction?
sodium nitrate and aluminum sulfite. double replacement
This rule states that a full valence shell is 8 electrons.
What is the octet rule?
Order the intermolecular forces from strongest to weakest.
Dipole-dipole, hydrogen bonding, LDF