Chemistry: Thermodynamics (11th grade)

Kinetic Energy

Energy in motion

Exothermic

Energy/heat released

What is heat measured in?

Joules

What does (M) stand for?

Mass in grams

Heat absorbed is?

Positive

Calorie

The amount of energy required to raise the temp. of 1 gram of pure water by 1 degree C

Specific Heat

The amount of heat required to raise the temp. of 1 gran of the substance by 1 C

Thermodynamics

The study of heat

Enthalpy

Heat content of a system at a constant pressure

Heat released is?

Negative

When heating a solution, a scientist detects a temperature increase in the solution during a period of time. Which of the following statements accurately characterizes the solution during this period?

The velocity of molecules in the solution is increasing

Law of Conservation of Mass

Energy is neither created nor destroyed, it can only move and be transformed

Endothermic

Energy/heat absorbed

Can we measure heat directly?

No

Equal amounts of heat are absorbed by 100g, samples of various solid metals with differing specific heat values. Which is true regarding metals and their specific heat values?

The metal with the greatest specific heat will undergo the smallest change in temperature

Calorimetry

An insulated device used for measuring the amount of heat absorbed/released during a chemical/physical process

How many steps to calculate the heat?

5