Chemistry Semester 01 Final (Part Two)

Front

What is the formula to calculate heat energy (Q) required to change the temperature of a substance?

Back

Q = mcΔT, where m = mass, c = specific heat capacity, ΔT = change in temperature.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 kg of a substance by 1°C.

Front

How much heat is required to increase the temperature of 150g of iron from 20°C to 150°C?

Back

8,700 J

Front

How much heat is needed to raise 200 g of water by 10°C?

Back

4,180 J

Front

What happens to an atom if it gains an electron?

Back

It becomes negatively charged.

Front

Which of the following elements does not exist diatomically? A) Nitrogen (N), B) Oxygen (O), C) Carbon (C), D) Fluorine (F)

Back

C) Carbon (C)

Front

What are the three main categories of elements on the periodic table?

Back

Metals, Nonmetals, and Metalloids.

Front

What is the most abundant type of element on the periodic table?

Back

Metals.

Front

Define a diatomic molecule.

Back

A diatomic molecule is a molecule composed of only two atoms, which can be of the same or different chemical elements.

Front

What is the charge of an atom that loses an electron?

Back

It becomes positively charged.