Unit 7/8 flashcardiziziziz version 1

Front

What is specific heat?

Back

Specific heat is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Front

How do you calculate the specific heat of a substance?

Back

Specific heat (c) can be calculated using the formula: c = Q / (m * ΔT), where Q is the heat added, m is the mass, and ΔT is the change in temperature.

Front

What is the difference between nitrogen-13 and nitrogen-14?

Back

Nitrogen-13 and nitrogen-14 differ in the number of neutrons; nitrogen-13 has 7 neutrons, while nitrogen-14 has 8.

Front

What are colligative properties?

Back

Colligative properties are properties of solutions that depend on the number of solute particles in a given amount of solvent, not the identity of the solute.

Front

How does adding a solute affect the freezing point of a solution?

Back

Adding a solute lowers the freezing point of a solution compared to the pure solvent.

Front

What is pH?

Back

pH is a measure of the acidity or basicity of a solution, on a scale from 0 to 14.

Front

How do you calculate pOH from pH?

Back

pOH can be calculated using the formula: pOH = 14 - pH.

Front

What is half-life in the context of radioactive decay?

Back

Half-life is the time required for half of the radioactive atoms in a sample to decay.

Front

How do you calculate the remaining amount of a substance after a certain number of half-lives?

Back

Remaining amount = Initial amount * (1/2)^(number of half-lives).

Front

What is the significance of the number of protons in an element?

Back

The number of protons determines the identity of an element and its position on the periodic table.