periodic table, atoms, elemtents,mixtures, and compounds
element
a(n) _________ is a substance consisting of a single type of atom.
molecule
a(n) _________ is the smallest unit of a compound that can exist alone and keep the properties if a compound
element
an atom is the smallest part of a(n) _________.
yes
are atoms neutral?
no
are compounds pure?
no
are cookies an element?
no
are curtains a mixture?
yes
are humans a mixture?
no
are metals bad conductors?
yes
are metals malleable?
yes
are metals shiny?
no
are mixtures pure?
no
are nonmetals ductile?
no
are nonmetals malleable?
yes
are rocks a mixture?
no
are shoes an element?
mass, space
atoms are classified as matter because they have ________ and take up ________.
neutrons, protons, electrons
atoms are made up of 3 particles. what are they?
yes
can metalloids conduct electricity bad and well?
formulas
compounds are written using ______________.
yes
do compounds have fixed ratios?
no
do metals have a low melting point?
no
do nonmetals have a high melting point?
yes
does matter have mass?
yes
does matter take up space?
from its location on the periodic table
how can an elements properties be predicted?
18
how many groups are are in the periodic table?
7
how many periods are in the periodic table?
characteristics
in the periodic table, groups or families have similar _________________.
yes
is alcohol a compound?
yes
is ammonia a compound?
yes
is baking soda a compound?
yes
is blood a mixture?
yes
is boron a metalloid?
yes
is brass a mixture?
yes
is calcium an element?
yes
is carbon dioxide a compound?
no
is cheese a compound?
yes
is every molecule the same in a compound?
no
is gold a compound?
yes
is gold an element?
yes
is helium an element?
yes
is lemonade a mixture?
yes
is oxygen an element?
no
is paper an element?
yes
is plastic a mixture?
yes
is pure water a compound?
yes
is salt a compound?
yes
is salt water a mixture?
yes
is seawater a mixture?
no
is tape a mixture?
no
is the chemical symbol under the element name?
no
is water a mixture?
no
is water an element?
nucleus
the ________ is in the center of the atom.
true
true or false. a molecule is a group of atoms that are joined together and is the smallest particle of a compound.
false
true or false. atoms are not found in matter.
false
true or false. compounds are not pure.
false
true or false. compounds are separated in nuclear reactions
false
true or false. compounds do not have chemical formulas.
true
true or false. compounds take in large inputs of energy because of chemical bonding
true
true or false. each component of a mixture retain its characteristic properties
true
true or false. elements can be broken down into a simpler type of matter by either physical or chemical change
false
true or false. elements consist only 2 kinds of atoms.
true
true or false. elements is one kind of atom and is pure.
true
true or false. mixtures are 2 or more elements or compounds physically together.
true
true or false. mixtures each have its own identity.
false
true or false. mixtures have a chemical bonding.
true
true or false. most atoms from chemical bonds with one or more atoms.
true
true or false. solid nonmetals are brittle and have low densities.
false
true or false. the number of protons and neutrons are the same.
true
true or false. you can find the number electrons and protons by looking at the atomic number.
true
true or false. you can find the number of protons and electrons by looking at the atomic number.
they can conduct electricity under some conditions but not others
what are semiconductors?
shells
what are the outer levels where electrons are found called?
negative
what charge are electrons?
no charge
what charge are neutrons?
positive
what charge are protons?
the number of electrons in each energy level
what do the shells represent?
subtract the atomic number from the atomic mass
what do you do to find the amount of neutrons?
something can be drawn into long, thin wire
what does ductile mean?
something can be made into thin sheets
what does malleable mean?
family or group
what is a column on the periodic table called?
atomic mass
what is at the bottom of the square on the periodic table?
atomic number
what is at the top of a square on the periodic table?
atoms
what is matter made up of?
chemical bond
what is the force that binds atoms together called?
4
what is the number of electrons that an atom in the carbon family usually gains, loses or shares?
1
what is the number of electrons that an atom in the halogen family usually gains, loses or shares?
3
what is the number of electrons that an atom in the nitrogen family usually gains, loses or shares?
2
what is the number of electrons that an atom in the oxygen family usually gains, loses or shares?
chemical
what type of reaction are compounds separated in?
nuclear
what type of reaction are elements separated in?
physical
what type of reaction are mixtures separated in?
1869
when was the periodic table first constructed?
yes
when you find the number of neutrons, do you round the mass?
electron cloud
where are the electrons found?
nucleus
where are the neutrons found?
right
where are the nonmetals located on the periodic table?
they have positive and negative charges
why are atoms neutral?
