HESI ENTRANCE-CHEMISTRY EXAM QUESTIONS WITH
COMPLETE SOLUTIONS VERIFIED
The scientific system of writing numbers.
The scientific notation is ?
Mathematical sign
Significand
Exponential (logarithm).
Scientific notation is composed of what 3 parts?
Logarithm.
Exponential is also called ?
It designates whether the number is positive or negative.
Tell me about the mathematical sign?
The base value of the number or the value of the number when all the values of
ten are removed.
Tell me about the significand of a scientific notation.
Tell me about the exponential of the scientific notation.
Weight, length & volume.
The metric system is a method to measure ___________ , ___________, &
____________.
Prefixes
_______ are the quantifies of the measurement unit.
Fahrenheit, Celsius, & Kelvin
The three most common temperature systems are ___________ , __________, &
_____________.
0 degrees F
,What is the freezing point of sea water or heavy brine at sea level in Fahrenheit
temperature?
32 degrees F
What's the freezing point of pure water at sea level?
212 degrees F
What's the boiling point of pure water at sea level in Fahrenheit?
0
Whats the freezing point of pure water at sea level in degree Celsius ?
100 degrees
What's the boiling point of pure water at sea level?
37 degrees C
What's the normal body temperature in Celsius?
Absolute zero (0K or -273.15 C)
What is the lowest temp achievable in Kelvin
Atom
The basic building block of all molecules is?
A nucleus & orbits (electron clouds)
Describe an atoms physical structure, what does it consist of?
Electron clouds
Orbits outside of a nucleus are also called?
protons and neutrons
The nucleus at the center of the atom is composed of _________ & __________.
Outermost orbit is full.
What makes an atom stable?
Shells or orbits
The electrons various energy levels are called __________ or ________.
Positive
Negative
No charge
What kind of charge does a proton, electron, and neutron has?
Protons and electrons are equal.
, What makes ground state atoms electrically neutral?
Ion
Ionic state
When an atom is electrically charged, it is called an _______ or in a _______ state. This
occurs in a solution or form of a chemical compound.
Net positive ; cation.
An atom in ionic state will have lost electrons, resulting in a _______________ charge.
Positive.
If an atom loses an electron, then what would be the net charge?
Periods & groups.
The rows & columns of the periodic table are called?
Group 1A
Alkali metals
Which group has a plus one charge and what is the name ?
Alkali Earth Metals
Group IIA are called?
Can either be negative or positive 4.
What charge does group IVA has?
Group 6A
Nonmetals
Which group has a -2charge and the name of this group is ?
Group 7A
Halogens
Which group has a -1 charge and the name of this group is ?
Noble gases
The ______________ group8 has no charge.
Electrons
1.
COMPLETE SOLUTIONS VERIFIED
The scientific system of writing numbers.
The scientific notation is ?
Mathematical sign
Significand
Exponential (logarithm).
Scientific notation is composed of what 3 parts?
Logarithm.
Exponential is also called ?
It designates whether the number is positive or negative.
Tell me about the mathematical sign?
The base value of the number or the value of the number when all the values of
ten are removed.
Tell me about the significand of a scientific notation.
Tell me about the exponential of the scientific notation.
Weight, length & volume.
The metric system is a method to measure ___________ , ___________, &
____________.
Prefixes
_______ are the quantifies of the measurement unit.
Fahrenheit, Celsius, & Kelvin
The three most common temperature systems are ___________ , __________, &
_____________.
0 degrees F
,What is the freezing point of sea water or heavy brine at sea level in Fahrenheit
temperature?
32 degrees F
What's the freezing point of pure water at sea level?
212 degrees F
What's the boiling point of pure water at sea level in Fahrenheit?
0
Whats the freezing point of pure water at sea level in degree Celsius ?
100 degrees
What's the boiling point of pure water at sea level?
37 degrees C
What's the normal body temperature in Celsius?
Absolute zero (0K or -273.15 C)
What is the lowest temp achievable in Kelvin
Atom
The basic building block of all molecules is?
A nucleus & orbits (electron clouds)
Describe an atoms physical structure, what does it consist of?
Electron clouds
Orbits outside of a nucleus are also called?
protons and neutrons
The nucleus at the center of the atom is composed of _________ & __________.
Outermost orbit is full.
What makes an atom stable?
Shells or orbits
The electrons various energy levels are called __________ or ________.
Positive
Negative
No charge
What kind of charge does a proton, electron, and neutron has?
Protons and electrons are equal.
, What makes ground state atoms electrically neutral?
Ion
Ionic state
When an atom is electrically charged, it is called an _______ or in a _______ state. This
occurs in a solution or form of a chemical compound.
Net positive ; cation.
An atom in ionic state will have lost electrons, resulting in a _______________ charge.
Positive.
If an atom loses an electron, then what would be the net charge?
Periods & groups.
The rows & columns of the periodic table are called?
Group 1A
Alkali metals
Which group has a plus one charge and what is the name ?
Alkali Earth Metals
Group IIA are called?
Can either be negative or positive 4.
What charge does group IVA has?
Group 6A
Nonmetals
Which group has a -2charge and the name of this group is ?
Group 7A
Halogens
Which group has a -1 charge and the name of this group is ?
Noble gases
The ______________ group8 has no charge.
Electrons
1.
