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Worksheetsphysical science final exam
Total questions: 26
Worksheet time: 22mins
an atom is smallest part of an element that still has the elements properties
true
false
Atoms of a given element all have the same number of
elements
protons
In covalent bonds, electrons are___ between ____
shared, two nonmetals
transferred, metals
In ionic bonds, electrons are___ between ___
transferred, a metal and nonmetal
shared, metals
Which type of radiation can penetrate through most substances – even lead
radioactive
gamma
Define nuclear fission
when a nucleus is split into two or more lighter nuclei
when a nucleus is bonded
how does a nucleus change when it undergoes beta decay?
atomic number increases
atomic number decreases
What is a drawback, or negative impact, of using nuclear reactions to generate power
it doesn't produce any waste
it produces radioactive waste
How do you balance a chemical equation
change subscript
change cofficiants
According to Avogadro, one mole equals
6.02x10^23
the molar mass of an element or compound
all the above
22.4 L of gas
List properties of bases.
bitter taste, slippery feel, ability to conduct electricity
sour taste, rough feel, conducts electricity
Acids have a pH___than 7.
lower
higher
same
acids will turn litmus what color
blue
red
purple
orange
To decrease the pressure exerted by a gas, you could
increase volume
increase temp
The greater the mass of an object, the__ inertia
greater
lesser
same
is friction and weight a example of forces
true
false
you weigh more on the moon because of he moon has weaker gravity than the earth
false
true
potential energy is when
a object is at rest
moving
slowing down
jumping
The momentum of an object depends on the__ and __
mass, velocity
height, speed
The charged particles that move through a wire in a circuit are
electrons
protons
neutrons
Car headlights are connected in a parallel circuit so that if one light goes out, the other lights will remain working.
true
false
The parts of a longitudinal wave where particles of matter are spread farthest apart are called ___
rarefaction
compression
The parts of a longitudinal wave where particles of matter are close together are called
rarefraction
compression
The lowest parts of a transverse wave are known as __
crest
troughs
The number of ocean waves that pass a buoy in one second is the frequency of the wave.
true
false
Low frequency waves have long wavelength
true
false
