Week 3 Quiz

Parents say that drinking coffee stunts growth, and people who drink coffee from a young age tend to be shorter. Ms. Cadena’s mom didn’t believe this theory and began to influence a love of coffee in Ms C at the early age of 10 years old. Ms. Cadena is 5’2’’ and still drinks 3-6 cups of delicious coffee each day.  Her father did believe that drinking coffee was problematic towards height, and did not allow Ms. C’s identical twin to drink coffee ever. She is 5’1’’. Genetics was not accounted for in this study.

What is the dependent variable?

Parents say that drinking coffee stunts growth, and people who drink coffee from a young age tend to be shorter. Ms. Cadena’s mom didn’t believe this theory and began to influence a love of coffee in Ms C at the early age of 10 years old. Ms. Cadena is 5’2’’ and still drinks 3-6 cups of delicious coffee each day.  Her father did believe that drinking coffee was problematic towards height, and did not allow Ms. C’s identical twin to drink coffee ever. She is 5’1’’. Genetics was not accounted for in this study.

What is the independent variable?

1. In the below equation, how much oxygen do we start with, given the law of conservation of mass?

Magnesium  + Oxygen ------>    Magnesium Oxide

48.6 g     +   ? g  ------>          80.6 g 

Mathematical Equivalence

ON

Label the missing piece of the fire triangle

b

Gasoline

Air

Oxygen

Flame

1. Draw the way the particles arrange themselves in a solid

1. Draw the way the particles arrange themselves in a liquid

1. Draw the way the particles arrange themselves in a gas

Label the products and reactants

a

b

Reactants

Products

Match the following

• Extensive Property

• Density

• Intensive Property

• Length

• Extensive Property

• Mass

List 3 of the 5 signs we use to recognize a chemical reaction has occurred