Chem 103 Module 1EXAM WITH QUESTION AND WELL VERIFIED
ANSWERS 2026!!!
3 domains of chemistry - ANSWERS💫✔️-macroscopic - large enough to be sensed directly by human
sight or touch
microscopic - visited in the imagination (or visible through microscopes, etc)
symbolic - specialized language used to represent components of the macroscopic and microscopic
domains
3 basic parts of a measurement - ANSWERS💫✔️-a number, a unit, and indication of uncertainty
What is the difference between an exact number and an uncertain measurement? - ANSWERS💫✔️-
exact number - derived from counting
uncertain measurement - derived from a measurement other than counting and subject to uncertainty
due to limitations of the measurement process used
What are the 3 states of matter commonly found on earth? - ANSWERS💫✔️-solid - fixed shape and
volume
liquid - takes the shape of the container, has a fixed volume, forms horizontal surface
gas - takes shape and volume of container
law of conservation of matter - ANSWERS💫✔️-The amount of matter involved in a chemical or physical
change must remain constant.
Physical property and Chemical property - ANSWERS💫✔️-Physical property
Definition: A characteristic you can observe or measure without changing the substance's chemical
identity. Examples: color, odor, density, melting point, boiling point, solubility, conductivity, hardness.
Chemical property
Definition: A characteristic that describes a substance's ability to undergo a chemical reaction and form
new substances. Examples: flammability, ability to rust (oxidation), reactivity with acids, tendency to
decompose, corrosiveness.
ANSWERS 2026!!!
3 domains of chemistry - ANSWERS💫✔️-macroscopic - large enough to be sensed directly by human
sight or touch
microscopic - visited in the imagination (or visible through microscopes, etc)
symbolic - specialized language used to represent components of the macroscopic and microscopic
domains
3 basic parts of a measurement - ANSWERS💫✔️-a number, a unit, and indication of uncertainty
What is the difference between an exact number and an uncertain measurement? - ANSWERS💫✔️-
exact number - derived from counting
uncertain measurement - derived from a measurement other than counting and subject to uncertainty
due to limitations of the measurement process used
What are the 3 states of matter commonly found on earth? - ANSWERS💫✔️-solid - fixed shape and
volume
liquid - takes the shape of the container, has a fixed volume, forms horizontal surface
gas - takes shape and volume of container
law of conservation of matter - ANSWERS💫✔️-The amount of matter involved in a chemical or physical
change must remain constant.
Physical property and Chemical property - ANSWERS💫✔️-Physical property
Definition: A characteristic you can observe or measure without changing the substance's chemical
identity. Examples: color, odor, density, melting point, boiling point, solubility, conductivity, hardness.
Chemical property
Definition: A characteristic that describes a substance's ability to undergo a chemical reaction and form
new substances. Examples: flammability, ability to rust (oxidation), reactivity with acids, tendency to
decompose, corrosiveness.
