Unit 4 Week 1: Heat Intro Review

Front

What is the Kelvin temperature equivalent to 37°C?

Back

310 K

Front

Which state of matter takes the shape of its container and completely fills it?

Back

Gas (H₂O(g))

Front

What type of change is represented by the transition from solid iodine (I₂(s)) to gaseous iodine (I₂(g))?

Back

Endothermic physical change

Front

What happens to heat flow when NH₄Cl(s) is dissolved in water, making the test tube feel colder?

Back

Heat flows from the hand to the test tube; endothermic process.

Front

What does the average kinetic energy of particles in a sample of matter represent?

Back

Temperature

Front

Define endothermic process.

Back

A process that absorbs heat from the surroundings.

Front

Define exothermic process.

Back

A process that releases heat to the surroundings.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of particles.

Front

What happens to the temperature of a substance during an endothermic reaction?

Back

The temperature decreases as heat is absorbed.

Front

What happens to the temperature of a substance during an exothermic reaction?

Back

The temperature increases as heat is released.