beginning of chemistry
what must be tied back during a lab?
long hair
what is a chemical symbol?
C10H18O ect...
what is a atomic struckure?
An atom is the smallest constituent unit of ordinary matter that constitutes a chemical element.
how many valence electrons does a noble gas have?
8
what is bonding?
A chemical bond is a lasting attraction between atoms.
is not wearing protective gear during a lab safe?
No not safe.
what are elements?
a species of atom having the same number of protons in their atomic nuclei.
what are subatomic particals?
Protons, Neutrons, Electrons.
if you burn lithium what color do you get?
red.
What is a molecular formula?
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule
what is used for measuring?
graduated cylinder.
what are compounds of atoms?
protons electrons and neutrons.
what is a atomic mass?
The atomic mass is the mass of an atom
what is a ionic compound?
an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.
what is the sweet smelling functional group
O=C-O-C
what are atoms mostly made of?
Empty space.
what are piriodic trends?
they are something that is constant.
what is a atomic structure?
a structure is a body of a atom that has protons neutrons and electrons.
what is a ion?
consists of positively charged ions called cations and negatively charged ions called anions.
what is the OCT RULE!?
The octet rule is a chemical rule of thumb that reflects the observation that elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas
What do you use for picking up hot beakers?
Hot hands and or beaker tongs.
what is the law of conservation of matter?
the mass of the system must remain constant over time, as system's mass cannot change, so quantity can neither be added nor be removed.
what is a isotope atomic mass of carbon?
12 amu
what is the rule of zero?
the charge of an atom should equal up to 0.
what is the HONC 1234 rule?!
H=1
O=2
N=3
C=4