Unit 1 Review

a way of learning that emphasizes observation and experimentation

first step in acquiring scientific method

Antoine Lavoisier studied the burning of substances in closed containers. What is the process of burning called?

How would you classify "flammability"

Cl^- contains how many electrons?

How would you classify "combustion"

How would you classify Jell-O?

everything that we can hold or touch is made of

How would you classify "sublimation"

If you change # of neutrons, you make

in a chemical reaction, matter is neither created nor destroyed

How would you classify nitrogen gas

Mg²⁺ contains how many electrons?

summary of observed behaviors that can predict future behavior

Calculate q_water if 25g of water is cooled by 12^oC given C_water = 4.184 J/g^oC choose the most correct answer

Potassium (K) is a member of which family?

If you change # of protons, you make

statement that summarizes past observations and predicts future ones is called scientific law

How would you classify "boiling point of water"

It takes 152.5 J of heat to raise the temperature of a 15g sample of iron from 20^oC to 43^oC. What is C_iron?

explains causes of observed behaviors

Cl contains how many electrons?

Ne-18 contains how many neutrons?

the science that tries to understand how matter behaves & how atoms/molecules behave

How much water can be heated by 10^oC with 10 calories of energy?

measurement of some aspect of nature

experiments do NOT determine validity of laws, hypotheses or theories

all matter is composed of small, indestructible particles called molecules

a tentative interpretation or explanation of the observations

If you change # of electrons, you make

100g of methane is burned to produce 85g CO₂ and some amount of water. How much water is produced?

neon-15 contains how many neutrons?

What is 20K converted to ^oC? (K = ^oC + 273)