Chemistry 1 Final Exam With Detailed
Questions And Correct
Answers||Latest Exam 2026-
2027||Already Graded A+
Matter -ANSWER anything that occupies space and has mass
mass -ANSWER the amount of matter in an object
pure substance -ANSWER elements and compounds that cannot be broken down
mixtures -ANSWER combinations of two or more substances that can be separated or
physically mixed
heterogeneous mixture -ANSWER non uniform composition ex: trail mix
homogeneous mixture -ANSWER uniform composition ex: salt water
qualitative data -ANSWER physical characteristics
quantitative data -ANSWER measure and calculate (numbers)
Atom -ANSWER smallest particle of an element that retains all the chemical properties
of the element
Nucleus -ANSWER center of atom
protons -ANSWER positively charged particles
neutrons -ANSWER neutral charged particles
electrons -ANSWER negatively charged particles
electron cloud -ANSWER the space where all the electrons are held
elements -ANSWER are pure substances that cannot be broken apart by ordinary
means to other substances
molecule -ANSWER consists of two or more atoms, either of the same type of element
or those of different elements, in a definite ratio
molecular formula -ANSWER molecules are represented by this symbolic formula
, compounds -ANSWER pure substances containing different elements in a definite ratio
held together by chemical bonds
chemical formula -ANSWER compounds represented by this
solids -ANSWER have rigid shape and fixed volume
liquids -ANSWER have no fixed shape and will take the volume of the container
gases -ANSWER expand to fill their container
Physical property -ANSWER any aspect of matter that is observable and measurable
without changing the identity or composition of a substance
intensive property -ANSWER does not depend on the size or amount of matter in the
object. Ex: temp and density
extensive property -ANSWER depends on the size and/or amount of matter in the object
Ex: mass length volume
physical changes examples -ANSWER boiling of liquid, melting of solid, dissolving a
solid in a liquid
density -ANSWER mass/volume
chemical reaction -ANSWER transformation of one or more atoms or molecules into one
or more different molecules
C to F -ANSWER C= 5/9(F-32)
precision -ANSWER how closely related the data agrees with itself
standard deviation -ANSWER often used to determine precision
sqrt(sum of all numbers-mean)^2/(n-1)
accuracy -ANSWER how well the data relates to the accepted values
error -ANSWER the difference between experimental results and the theoretical value
percent error -ANSWER (experimental value - accepted value)/(accepted value) *100
scientific notation -ANSWER short hand for very large or very small numbers
Questions And Correct
Answers||Latest Exam 2026-
2027||Already Graded A+
Matter -ANSWER anything that occupies space and has mass
mass -ANSWER the amount of matter in an object
pure substance -ANSWER elements and compounds that cannot be broken down
mixtures -ANSWER combinations of two or more substances that can be separated or
physically mixed
heterogeneous mixture -ANSWER non uniform composition ex: trail mix
homogeneous mixture -ANSWER uniform composition ex: salt water
qualitative data -ANSWER physical characteristics
quantitative data -ANSWER measure and calculate (numbers)
Atom -ANSWER smallest particle of an element that retains all the chemical properties
of the element
Nucleus -ANSWER center of atom
protons -ANSWER positively charged particles
neutrons -ANSWER neutral charged particles
electrons -ANSWER negatively charged particles
electron cloud -ANSWER the space where all the electrons are held
elements -ANSWER are pure substances that cannot be broken apart by ordinary
means to other substances
molecule -ANSWER consists of two or more atoms, either of the same type of element
or those of different elements, in a definite ratio
molecular formula -ANSWER molecules are represented by this symbolic formula
, compounds -ANSWER pure substances containing different elements in a definite ratio
held together by chemical bonds
chemical formula -ANSWER compounds represented by this
solids -ANSWER have rigid shape and fixed volume
liquids -ANSWER have no fixed shape and will take the volume of the container
gases -ANSWER expand to fill their container
Physical property -ANSWER any aspect of matter that is observable and measurable
without changing the identity or composition of a substance
intensive property -ANSWER does not depend on the size or amount of matter in the
object. Ex: temp and density
extensive property -ANSWER depends on the size and/or amount of matter in the object
Ex: mass length volume
physical changes examples -ANSWER boiling of liquid, melting of solid, dissolving a
solid in a liquid
density -ANSWER mass/volume
chemical reaction -ANSWER transformation of one or more atoms or molecules into one
or more different molecules
C to F -ANSWER C= 5/9(F-32)
precision -ANSWER how closely related the data agrees with itself
standard deviation -ANSWER often used to determine precision
sqrt(sum of all numbers-mean)^2/(n-1)
accuracy -ANSWER how well the data relates to the accepted values
error -ANSWER the difference between experimental results and the theoretical value
percent error -ANSWER (experimental value - accepted value)/(accepted value) *100
scientific notation -ANSWER short hand for very large or very small numbers
