SC/NATS 1870 MIDTERM STUDY
GUIDE 2025 QUESTIONS AND
ANSWERS
What is matter? - ....ANSWER ...-anything that has mass and volume (has to
occupy space)
Whats an example of matter? - ....ANSWER ...-Toothbrush, car, pencil,
elements.
What is mass? - ....ANSWER ...-the amount of matter a physical body
contains. Mass is constant and does not change
If something has a mass of 1kg on earth, what is the weight on the moon? -
....ANSWER ...-1kg because mass is constant.
What is energy? - ....ANSWER ...-The capacity a physical system has to
move or perform work.
what are 3 examples of energy, theres a lot just pick 3 - ....ANSWER ...-
Heat, Light, Motion, electrical, chemical, gravitational
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,what are the types of energy and their purpose - ....ANSWER ...-Potential
energy (stored energy)
Kinetic energy (working energy, the energy of motion)
Radiant energy (radiation, the energy carried by light)
What are fundamental quantities? - ....ANSWER ...-Quantities that are the
base for all other quantities and measurements
What are the 3 fundamental quantities (out of 7) and their units -
....ANSWER ...-L = Length (meters)
M = Mass (kilograms)
T = Time (seconds)
what is an Atom, what is the charge? - ....ANSWER ...-the smallest unit of
(known/ordinary) matter
contains a positively charged nucleus that has protons and neutrons (all of which
are surrounded by a negatively charged electron cloud).
What is an ion? - ....ANSWER ...-An atom (or multiple) that has a different
number of protons than electrons (has a positive or negative charge)
What is an Anion? - ....ANSWER ...-a negatively charged ion
What is a cation? - ....ANSWER ...-a positively charged ion
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, What is an isotope? with an example. - ....ANSWER ...-Isotopes of an
element are when an element has a different number of neutrons and different
mass number but is still the same element (ex. Hydrogen and Tritium)
What is Kelvin? - ....ANSWER ...-One of the 7 fundamental quantities (a
unit of measurement of the SI system) that measures the unit of temperature.
what is the absolute kelvin temperature? - ....ANSWER ...--273.15 centigrade
degrees)
What does this sentence mean? 'Metric system is decimal-based' -
....ANSWER ...-It is essentially referring to the metric systems ability to
convert to other metric measurements. To convert measurements (such as Kg and
mm) all that is necessary is to move the decimal to the required spaces.
What is the unit of the following quantities in SI units?
Mass:
Temperature:
Length:
Time:
Volume: - ....ANSWER ...-Mass: Kilograms (kg)
Temperature: Kelvin (degrees)
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
GUIDE 2025 QUESTIONS AND
ANSWERS
What is matter? - ....ANSWER ...-anything that has mass and volume (has to
occupy space)
Whats an example of matter? - ....ANSWER ...-Toothbrush, car, pencil,
elements.
What is mass? - ....ANSWER ...-the amount of matter a physical body
contains. Mass is constant and does not change
If something has a mass of 1kg on earth, what is the weight on the moon? -
....ANSWER ...-1kg because mass is constant.
What is energy? - ....ANSWER ...-The capacity a physical system has to
move or perform work.
what are 3 examples of energy, theres a lot just pick 3 - ....ANSWER ...-
Heat, Light, Motion, electrical, chemical, gravitational
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,what are the types of energy and their purpose - ....ANSWER ...-Potential
energy (stored energy)
Kinetic energy (working energy, the energy of motion)
Radiant energy (radiation, the energy carried by light)
What are fundamental quantities? - ....ANSWER ...-Quantities that are the
base for all other quantities and measurements
What are the 3 fundamental quantities (out of 7) and their units -
....ANSWER ...-L = Length (meters)
M = Mass (kilograms)
T = Time (seconds)
what is an Atom, what is the charge? - ....ANSWER ...-the smallest unit of
(known/ordinary) matter
contains a positively charged nucleus that has protons and neutrons (all of which
are surrounded by a negatively charged electron cloud).
What is an ion? - ....ANSWER ...-An atom (or multiple) that has a different
number of protons than electrons (has a positive or negative charge)
What is an Anion? - ....ANSWER ...-a negatively charged ion
What is a cation? - ....ANSWER ...-a positively charged ion
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, What is an isotope? with an example. - ....ANSWER ...-Isotopes of an
element are when an element has a different number of neutrons and different
mass number but is still the same element (ex. Hydrogen and Tritium)
What is Kelvin? - ....ANSWER ...-One of the 7 fundamental quantities (a
unit of measurement of the SI system) that measures the unit of temperature.
what is the absolute kelvin temperature? - ....ANSWER ...--273.15 centigrade
degrees)
What does this sentence mean? 'Metric system is decimal-based' -
....ANSWER ...-It is essentially referring to the metric systems ability to
convert to other metric measurements. To convert measurements (such as Kg and
mm) all that is necessary is to move the decimal to the required spaces.
What is the unit of the following quantities in SI units?
Mass:
Temperature:
Length:
Time:
Volume: - ....ANSWER ...-Mass: Kilograms (kg)
Temperature: Kelvin (degrees)
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
