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WorksheetsPhysical Science Final
Total questions: 40
Worksheet time: 40mins
When dissolved in water, all acids will
form hydroxide ions
have a negative charge
conduct electricity
turn blue
A solution that is mildly acidic would have a pH of approximately
2
4
6
8
The label on a bottle indicates that the substance inside has a pH of 13. This tells you that the substance is
neutral
strongly acidic
mildly basic
strongly basic
A base forms which ions in solution?
oxygen
hydroxide
hydronium
hydrogen
Which solution is the most acidic?
apple juice pH=3
pure water pH=7
hand soap solution pH=10
drain cleaner solution pH= 14
When a solution of an acid reacts with a solution of a base, hydrogen ions react with hydroxide ions to form
salt
a stronger acid
a weaker base
water
Which of the following is a basic solution?
household ammonia
diluted vinegar
pure water
HCL dissolved in water
Which phrase is NOT true about acids?
they taste sour
they feel slippery
turns blue litmus paper red
form H+ ions in solution
The name DINITROGEN TETROXIDE tells you that this compound contains
2 N atoms and 2 O atoms
4 N atoms and 2 O atoms
2 N atoms and 4 O atoms
4 N atoms and 4 O atoms
The name for the compound with the formula AL2O3 would be written as
aluminum oxide
alum oxide
alum oxygen
aluminum oxygen
An ionic bond is a bond that forms between
ions with opposite charges
atoms with neutral charges
one atom's nucleus and another atom's electrons
the electrons of two different atoms
In which type of bond do atoms share electrons?
covalent bonds
metallic bonds
ionic bonds
polyatomic bonds
A release of energy is a sign that
a chemical change is taking place
a physical change has just occured
oxygen is present
organic chemicals are present
All of the following factors may speed up a chemical reaction EXCEPT
smaller surface area
higher pressure
higher temperature
presence of a catalyst
The substance that is formed in a chemical reaction is called the
polymer
reactant
radical
product
In a balanced chemical equation, the mass of the reactants is equal to the
atoms in a molecule
atomic mass of the elements
volume of the reactants
mass of the products
What coefficient is missing in C2H4 + (?) O2 --> 2CO2 + 2H2O
2
3
4
5
Which of the following represents a double displacement reaction between sodium chloride and and silver flouride?
NaCl + AgF -> NaAgF + Cl2
NaCl + AgF -> NaF + AgCl
NaCl + AgF -> AG + NaClF
NaCl + AgF -> NaF + Cl2 + Ag
At higher temperatures, food cooks faster because particles of food
take up less space
increase in number
collide more often
come into contact with water
What happens in a chemical reaction?
atoms are destroyed
atoms are created
atoms are heated and cooled
atoms are rearranged
When you go bowling and the ball hits the first pin, which hits the 2 pins behind it, which then hit the pins behind them. This demonstrates
a chain reaction
the theory of relativity
fusion
alpha decay
A tossed salad with tomatoes, cucumbers, apples and croutons is an example of a
heterogeneous mixture
homogeneous mixture
solution
solvent
Sterling silver is 92.5% silver and 7.5% other metals like copper and zinc, which makes it
a suspension
an emulsion
an alloy
a colloid
Because many substances dissolve in water, water is referred to as the
heterogeneous solvent
homogenous solvent
universal solvent
universal solute
Loose sugar dissolves much faster than a sugar cube because loose sugar ____________.
has a greater surface area
has less kinetic energy
has a higher temperature
has a greater surface tension
When making lemonade from a mix, the water is the _______ and the mixture all together is the _______.
solute, solution
solute, solvent
solvent, solution
solution, solvent
Example: H2
H2 + O --> H2O
_Zn+_HCl-->_ZnCl2 +_H2
_Mg + _Cl2 --> _MgCl2
Fe + S --> FeS
__P4 + __O2 --> __P2O3
_Mg + _Cl2 --> _MgCl2
