CHE 1214 MGCCC Test 1 unit 1 & 2
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Answers|2025 Update | 100% Correct.
___ are significant figures that are not exact. - CORRECT ANSWER-numbers from
measurement
list the rules for significant figures: - CORRECT ANSWER-- 0's are used to position
decimals
- in mult/div, the last digit determined in sum/dif determined by position of 1st doubled
digit
this is the amount of heat, in calories or joules, necessary to raise the temperature of 1
gram of any substance by 1 degree celsius. - CORRECT ANSWER-specific heat
a process that absorbs energy - CORRECT ANSWER-endothermic
a process that releases energy - CORRECT ANSWER-exothermic
the total amount of energy in the universe is constant. energy cannot be created or
destroyed - CORRECT ANSWER-law of conservation of energy
there is no change in the quantity of matter present during a chemical or physical
reaction - CORRECT ANSWER-law of conservation of matter
this states that the combined amount of energy in the universe is fixed. Albert Einstein
derived this relationship. E=mc2 - CORRECT ANSWER-law of conservation of matter
and energy
properties exhibited by matter as it undergoes a chemical change - CORRECT
ANSWER-chemical properties
properties exhibited by matter as it undergoes a physical change - CORRECT
ANSWER-physical properties
a ___ is when one or more of the substances is used up, one or more new substances
are formed, or energy is absorbed or released - CORRECT ANSWER-chemical change
how long something is. - CORRECT ANSWER-length
, the SI unit of measurement is the ___ - CORRECT ANSWER-meter
the meter is approx. ____ inches. - CORRECT ANSWER-39
how much space something occupies. - CORRECT ANSWER-volume
the SI unit for volume is ___. - CORRECT ANSWER-liters
this is quantity of matter an object possesses. - CORRECT ANSWER-mass
the units of ___ are universal over the whole earth. - CORRECT ANSWER-time
Fahrenheit and Celsius scales. interconversion between the 2 is necessary. -
CORRECT ANSWER-temperature
this is a method that is used to cancel out units so that you may arrive at the correct
answer. - CORRECT ANSWER-factor label method
list the steps of the factor label method: - CORRECT ANSWER-- compare beginning
and end units to plan attack
- find conversion factors
- multiply/ divide so units will cancel to give final units
list the states of matter: - CORRECT ANSWER-solid, liquid, gas
state of matter that has a definable shape and has mass. - CORRECT ANSWER-solid
something that has mass and takes up space. Everything is ___. - CORRECT
ANSWER-matter
the science of matter - CORRECT ANSWER-chemistry
This is a method used to test a theorem to determine if it is a fact - CORRECT
ANSWER-scientific method
a statement based on direct experience - CORRECT ANSWER-fact
a statement that may either be proven or disproven. The statement is given to try to
explain a fact. - CORRECT ANSWER-hypothesis
a statement (hypothesis) that passes the "tests". - CORRECT ANSWER-theory
measurements need to be ____ if they are to have any significance. - CORRECT
ANSWER-standardized
Explore New Questions and
Answers|2025 Update | 100% Correct.
___ are significant figures that are not exact. - CORRECT ANSWER-numbers from
measurement
list the rules for significant figures: - CORRECT ANSWER-- 0's are used to position
decimals
- in mult/div, the last digit determined in sum/dif determined by position of 1st doubled
digit
this is the amount of heat, in calories or joules, necessary to raise the temperature of 1
gram of any substance by 1 degree celsius. - CORRECT ANSWER-specific heat
a process that absorbs energy - CORRECT ANSWER-endothermic
a process that releases energy - CORRECT ANSWER-exothermic
the total amount of energy in the universe is constant. energy cannot be created or
destroyed - CORRECT ANSWER-law of conservation of energy
there is no change in the quantity of matter present during a chemical or physical
reaction - CORRECT ANSWER-law of conservation of matter
this states that the combined amount of energy in the universe is fixed. Albert Einstein
derived this relationship. E=mc2 - CORRECT ANSWER-law of conservation of matter
and energy
properties exhibited by matter as it undergoes a chemical change - CORRECT
ANSWER-chemical properties
properties exhibited by matter as it undergoes a physical change - CORRECT
ANSWER-physical properties
a ___ is when one or more of the substances is used up, one or more new substances
are formed, or energy is absorbed or released - CORRECT ANSWER-chemical change
how long something is. - CORRECT ANSWER-length
, the SI unit of measurement is the ___ - CORRECT ANSWER-meter
the meter is approx. ____ inches. - CORRECT ANSWER-39
how much space something occupies. - CORRECT ANSWER-volume
the SI unit for volume is ___. - CORRECT ANSWER-liters
this is quantity of matter an object possesses. - CORRECT ANSWER-mass
the units of ___ are universal over the whole earth. - CORRECT ANSWER-time
Fahrenheit and Celsius scales. interconversion between the 2 is necessary. -
CORRECT ANSWER-temperature
this is a method that is used to cancel out units so that you may arrive at the correct
answer. - CORRECT ANSWER-factor label method
list the steps of the factor label method: - CORRECT ANSWER-- compare beginning
and end units to plan attack
- find conversion factors
- multiply/ divide so units will cancel to give final units
list the states of matter: - CORRECT ANSWER-solid, liquid, gas
state of matter that has a definable shape and has mass. - CORRECT ANSWER-solid
something that has mass and takes up space. Everything is ___. - CORRECT
ANSWER-matter
the science of matter - CORRECT ANSWER-chemistry
This is a method used to test a theorem to determine if it is a fact - CORRECT
ANSWER-scientific method
a statement based on direct experience - CORRECT ANSWER-fact
a statement that may either be proven or disproven. The statement is given to try to
explain a fact. - CORRECT ANSWER-hypothesis
a statement (hypothesis) that passes the "tests". - CORRECT ANSWER-theory
measurements need to be ____ if they are to have any significance. - CORRECT
ANSWER-standardized
