Unit 7/8 flashcardiziziziz version 1

Front

What is the normal condensation temperature of a substance?

Back

The normal condensation temperature is the temperature at which a substance changes from a gas to a liquid under standard atmospheric pressure. For the given substance, it is 140°C.

Front

What does it indicate if litmus paper turns blue when dipped in a substance?

Back

If litmus paper turns blue, it indicates that the substance is basic (alkaline).

Front

What is the specific heat of water?

Back

The specific heat of water is 4.184 J/g°C.

Front

How much heat is needed to change 145 grams of water from 15°C to 20°C?

Back

3033.4 J (rounded to significant digits: 3000 J).

Front

What is happening along line segment CD in a phase change diagram?

Back

Along line segment CD, the substance is in the liquid phase.

Front

What is molarity?

Back

Molarity is a measure of the concentration of a solute in a solution, expressed as moles of solute per liter of solution (mol/L).

Front

What is the boiling point of water at standard atmospheric pressure?

Back

The boiling point of water at standard atmospheric pressure is 100°C.

Front

What is the freezing point of water?

Back

The freezing point of water is 0°C.

Front

What happens to the temperature of a substance during a phase change?

Back

During a phase change, the temperature of a substance remains constant while it absorbs or releases heat.

Front

What is the difference between an acid and a base?

Back

An acid is a substance that donates protons (H+) in a solution, while a base is a substance that accepts protons.