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PS Midterm Review
English System
Which of the following is not a fossil fuel
PS Midterm Review
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Answers
1
Which of the following is not a fossil fuel
paper
coal
natural gas
petroleum
2
English System
Used by scientists
Universal
Based 10
Gallons, pounds, feet etc.
3
A mixture can be all of the following except
made of different elements
made of different compounds
always homogenous
made of different atoms
4
Atomic Mass
Total number of neutrons
Total number of electrons
Total number of protons
Average of isotopes
5
Orbital
Where an electron is likely to be found
Where a neutron is likely to be found
Where a proton is likely to be found
Red and Yellow
6
In salt water, salt is the
solubility
solvent
solute
solution
7
As temperature increases and pressure remains constant, the volume must
Increase
Decrease
Stay the same
8
In an exothermic reaction, the energy of the products is greater than the energy of the reactants.
True
False
9
Liquid to Gas
Deposition
Evaporation
Condensation
Sublimation
10
Temperature changes during a phase change.
Falso
True
11
All of the following are physical properties except
color
flammability
luster
malleability
12
Gas to Solid
Deposition
Evaporation
Sublimation
Condensation
13
The manipulated variable is the one the scientist changes
False
True
14
Ionic Compounds do this in water
dissociate
decompose
disperse
decompress
15
Acids and Bases produce ions
True
False
16
Homogeneous is the same all the way through
False
True
17
Who thought electrons orbited the nucleus like planets orbit the sun?
Dalton
Bohn
Rutherford
Thomson
18
Acids and bases conduct electricity
True
False
19
All of the following are part of the scientific method except
Create a hypothesis
Perform an experiment
Ask a question
Creation of a law
20
Mass #
Total number of protons
Protons + Neutrons
Total number of neutrons
Total number of electrons
21
Solid to liquid
Freezing
Evaporation
Melting
Condensation
22
A compound is made of multiple elements
False
True
23
Covalent molecules do this in water
disperse
dissociate
decompose
decompress
24
Atomic Number
Total number of neutrons
Red and Yellow
Total number of protons
Total number of elecrons
25
A hypothesis is
A proposed answer
A proposed question
An exact answer
A definite law
26
Density is
Volume/mass
Mass/Volume
volume/weight
Weight/volume
27
Isotopes of an element have different numbers of neutrons.
True
False
28
An exothermic reaction releases energy
False
True
29
In an endothermic reaction, the energy of the products is greater than the energy of the reactants.
True
False
30
An ionic compounds on its own conducts electricity
False
True
31
As pressure increases in order to keep the volume the same, the temperature must
stay the same
decrease
increase
32
Cation
Positive ion
Negative ion
33
Who performed the Alpha ray experiment?
Bohr
Thomson
Dalton
Rutherford
34
A theory
is a hypothesis
is based on multiple experiments
is based on one experiment
will turn into a law.
35
Ionic bonds form between
two metalloids
two nonmetals
a metal and a non metal
two metals
36
All of the following are chemical properties except
None of the above
pH
reactivity
flammability
37
Combustion is the ability of a compound to burn in the presence of hydrogen
False
True
38
Isotopes of an element have different numbers of electrons.
True
False
39
Which of the following is not a synthetic polymer
rubber
nylon
nucleic acids
polyethylene
40
The metric system is all of the following except
used by scientists
American
universal
based 10
41
Who performed the cathode ray tube experiment?
Thomson
Dalton
Bohr
Rutherford
42
An atom is the smallest particle.
False
True
43
Dmitri Mendeleev put the elements in order of
increasing orbitals
decreasing atomic mass
increasing atomic mass
increasing valence electrons
44
Covalent molecules form crystal lattice structures.
True
False
45
You can see the different parts that make up a heterogeneous substance.
False
True
46
The responding variable is the one the scientist changes.
True
False
47
Anion
Negative ion
Positive ion
48
In water, an ionic compound will conduct electricity
True
False
49
Covalent bonds form between
metal and nonmetal
two nonmetals
two metalloids
two metals
50
A controlled experiment has 2 variables.
False
True
51
Covalent bonds are stronger than ionic bonds.
False
True
52
Covalent intermolecular forces are stronger than ionic intermolecular forces.
True
False
53
Isotopes of an element have different numbers of protons.
False
True
54
The following are properties of metals except
low density
high density
malleability
ductility
