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Matter Review 7th grade Flashcards | StudBud
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Matter Review 7th grade
Matter Review 7th grade
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Its a quiz about matter
Flashcards
32 cards
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Questions
32
Answers
1
the difference between chemical and physical change
A physical property's an aspect of matter
physical change doesn't change the object unlike a chemical
Physical changes are changes affecting the form
Chemical change is any change
2
molecule definition
two or more atoms chemically combined
two atoms together
two or more atoms
the opposite of a mixture
3
diffusion definition
the concentration from low to high
the spreading of particles
the concentration from high to low
particles moving
4
which substance has a low density
mercury
air
copper
bronze
5
which substance has a high density
ice
water
gold
cotton
6
what is matter
everything
potato's
anything that has mass
nothing
7
what's the difference between atoms and molecules
atoms have wings, and molecules don't
molecules are several atoms combined, and atoms are the same
8
examples of characteristic properties
elements
density
cookie dough
molecules
9
formula for density
volume*mass
mass/density
density*volume
mass/volume
10
why do we classify matter
we want to
because it makes it easier to study
we want to be like scientists
we feel like it
11
what does the number of an atom on the periodic table of elements mean
number of protons
number of electrons
number of valence electrons
number of neutrons
12
What's the magic number
2
8
abra cadabra
6
13
mixture defintion
ice cream
cake mix
a substance made by mixing other substances together.
two things mixed
14
example of a physical change
making a new element
making a chemical
ripping a page in a book
using a chemistry kit
15
chemical change definition
anything that has chemicals in it
i like chemicals
anything big
results in the formation of new chemical substances
16
what are valence electrons
the number of electrons on the last layer
the number of how many electrons on the first row
how many electrons there are
the magic number
17
what is the magic number
8
13
122222222222222222222222222224244132452613453684863762756987
5
18
examples of chemical changes
iron rusting
paper ripping
pressing a button
building legos
19
how can you tell if it's a physical change
if it's not a chemical change
blah blah
if it doesn't change the substance
if it is one
20
which one is an example of a molecule
oxygen
table salt
lead
soup
21
definition of ion
an atom or molecule with a net electric charge
mixtures
a form of matter
a mixture or atom with a net electric charge
22
compound definition
two elements
a thing that is composed of two or more separate elements
table salt
water
23
the affect of temperature on a particle
nothing
the colder the more energy
the hotter the more energy
all of the above
24
what are atoms
noble gases
a molecule
the basic unit of an element
hydrogen
25
what are characteristics properties
the characteristics of it
Qualitive and Quantitive descriptions
how a substance reacts to another substance
properties that never change for a substance
26
how is the periodic table organized
in chronological order depending on the number of electrons
in chronological order depending on the number of protons
it's not
all of the above
27
What is density
the space between particles in a substance
the amount of weight a substance weighs
the measurement of length
the amount of space a substance takes up
28
what are the electron layers
2,8,...
1,2,3
3
5,6,7,8
29
what we know about the atom
that its small
built from small particles: protons, neutrons, and electrons
nothing
i like atoms
30
ways to classify matter
look at properties
eat some tacos
ask someone
look on the internet
31
States of Matter
solid, liquid, gas
volume, density, mass
paper, tree, roots
carrot's, radish, soil
32
elements definition
the simplest form of matter
lots of atoms
something on the periodic table
molecules combined with atoms
