Chem 120 Exam 1 WKU |65
Questions with Answers
Ianthanides and actinides - -What are the two rows at the bottom of the
periodic table called?
- 1) Alkali metals (+1 charge)
2) Alkaline earth metals (+2 charge)
17) Halogens (-1 charge)
18) Noble gases (-2 charge) - -Group names? (1, 2, 17, and 18)
- Matter - -Anything that has mass/can be perceived and takes up space
- Mass - -A measure of the amount of matter in an object
- Freezing <——> melting - -Phase change: solid to liquid
- Boiling <——> condensation - -Phase change: liquid to gas
- Sublimation <——> condensation - -Phase change: solid to gas
- Physical change - -Change of state/condition but not substance itself
- Chemical change - -A change in matter that produces one or more new
substances
- Physical property - -A characteristic of a pure substance that can be
observed without changing it into another substance (boiling/melting point,
color, density, hardness, and electrical conductivity)
- Chemical property - -The change of one type of matter into another type
(flammability, toxicity, acidity)
- Yes because they are not chemically combined (sweet tea is mixture of
sugar and tea) - -Can mixtures be physically separated?
- 212°F - -What is the boiling point of water in degrees Fahrenheit?
- 32°F - -What is the freezing point of water in degrees Fahrenheit?
- 100°C - -What is the boiling point of water in degrees Celsius?
- 0°C - -What is the freezing point of water in degrees Celsius?
Questions with Answers
Ianthanides and actinides - -What are the two rows at the bottom of the
periodic table called?
- 1) Alkali metals (+1 charge)
2) Alkaline earth metals (+2 charge)
17) Halogens (-1 charge)
18) Noble gases (-2 charge) - -Group names? (1, 2, 17, and 18)
- Matter - -Anything that has mass/can be perceived and takes up space
- Mass - -A measure of the amount of matter in an object
- Freezing <——> melting - -Phase change: solid to liquid
- Boiling <——> condensation - -Phase change: liquid to gas
- Sublimation <——> condensation - -Phase change: solid to gas
- Physical change - -Change of state/condition but not substance itself
- Chemical change - -A change in matter that produces one or more new
substances
- Physical property - -A characteristic of a pure substance that can be
observed without changing it into another substance (boiling/melting point,
color, density, hardness, and electrical conductivity)
- Chemical property - -The change of one type of matter into another type
(flammability, toxicity, acidity)
- Yes because they are not chemically combined (sweet tea is mixture of
sugar and tea) - -Can mixtures be physically separated?
- 212°F - -What is the boiling point of water in degrees Fahrenheit?
- 32°F - -What is the freezing point of water in degrees Fahrenheit?
- 100°C - -What is the boiling point of water in degrees Celsius?
- 0°C - -What is the freezing point of water in degrees Celsius?
