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OBMS Science Review Quarter 2 Flashcards | StudBud
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OBMS Science Review Quarter 2
OBMS Science Review Quarter 2
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1
The smallest piece of matter that cannot be further broken down
compound
mixture
atom
molecule
2
The ____________ is the standard unit used to measure mass.
centimeter
meter
gram
ounce
3
During a physical change, or a chemical reaction, the total amount of mass present
stays the same
decreases
increases
may increase or decrease
4
Which of the following is an example of only potential energy?
A child roller skating
A book falling from a desk
A car at a red light
A dog chasing a ball
5
Which of the following is an example of freezing?
water vapor becomes water droplets
ice becomes water vapor
melted wax becomes solid
ice becomes liquid water
6
Na contains 11 protons and 12 neutrons. How many electrons does a sodium atom have?
12
11
24
10
7
Which of these formulas shows the relationship among speed, time, and distance?
S=d/t
S=td
S= t + d
t = Sd
8
What are electrons?
particles whose charge can change
negatively charged particles
positively charged particles
particles with no charge
9
A substance made of only one type of atom is a(n)
molecule
compound
element
mixture
10
A change of position over time is called
distance
motion
location
acceleration
11
The kinetic theory of matter states that the atoms of a diamond are
transparent
always moving
reflectors of light
extremely hard
12
At what point does the ball have the greatest potential energy?
B
C
A
D
13
The nucleus of an atom contains
protons and neutrons
electrons and protons
only electrons
protons, neutrons, and electrons
14
Anything that has mass and takes up space is ____________.
volume
weight
mass
matter
15
Which of the following is an example of matter?
the light from a campfire
the sound of a horn blaring
the heat blown out of a hair dryer
the air in Earth's atmosphere
16
The atomic number of an element tells you the atom's
mass
number of protons
number of neutrons
weight
17
Atoms of an element always have a certain number of
electrons
ions
neutrons
protons
18
Compounds often have different properties from those of the
protons that make up the compound
crystals that make up the compound
elements that make up the compound
electrons that make up the compound
19
Bob measures the space inside a box to find out how much it will hold. He is finding the box's
weight
height
mass
volume
20
Two atoms have the same number of protons. They must be
identical in atomic mass numbers
neutrally charged
atoms of the same element
isotopes of each other
21
When you measure the average kinetic energy of the particles in a baseball, you find its?
hardness
mass
temperature
volume
22
At what point does the ball have the greatest kinetic energy?
B
C
D
A
23
Which tells you how quickly an object changes position?
relative motion
speed
direction
observation
24
Which of the following is an example of thermal expansion?
the Sun rising on a summer day
a balloon expanding as air is added to it
wood burning in a campfire
alcohol rising in a thermometer
25
Water is made up of hydrogen and oxygen atoms. Water is a(n)
mixture
element
atom
compound
26
Laurie is riding her bicycle. Her kinetic energy depends on her mass and
height
speed
weight
temperature
27
The water in which beaker has the greatest thermal energy?
A
C
B
D
28
A car and a garbage truck are traveling side by side on a road. Which has more kinetic energy?
car
garbage truck
29
The total number of protons and neutrons in the nucleus determines the atom's
atomic number
size
symbol
atomic mass
30
Of the following, which is the simplest form of matter?
compund
mixture
water
element
31
The process of a solid changing directly to a gas is called
freezing
evaportaion
condensation
sublimation
32
Heat is a flow of energy caused by
thermal expansion
temperature differences
density differences in solids
specific heat
33
What type of energy does the roller coaster car have at point A ?
potential
kinetic
34
What type of energy does the roller coaster car have at point D ?
kinetic
potential
