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?