A Sustainable World through Chemistry • Notecard ques9on: In what ways is our way of living aﬀec9ng the world around us?
Notecard Ques9on • What three substances can be found in CFCs? In your own words describe what CFCs do to the ozone layer.
Notecard ques9on • In PAIRS classify the following maGer as either having poten9al energy, kine9c energy or both and state whether it is an element, a compound, a heterogeneous mixture, or a homogeneous mixture (they may have more than one classiﬁca9on or no classiﬁca9on): • Electrons, Peeled banana, Lemonade, Petroleum, A sac ﬁlled with pieces of wood, Ethanol (A type of alcohol), Salt water, Sand, Potassium, C6H12O6 + H2O, Brass musical instruments.
NOTECARD QUESTION – In Chemistry what does the following statement mean: Once bread has been burned, it can never go back?
NOTECARD QUESTION • In groups of 3: with phenomena in your environment, exemplify state changes that maGer undergoes. • Write the symbol for the following 3 elements: Cadmium, Beryllium, Potassium.
Laws in Dalton’s Atomic Theory • NOTECARD QUESTION: • Total mass remains constant during a chemical reac9on • Constant composi9on • FIXED mass of one element, the mass of the other element is in ra9os of small whole numbers.