Physical Science Final Exam

Front

What is the formula to calculate time when distance and speed are known?

Back

Time = Distance / Speed

Front

What is a beaker used for in a laboratory?

Back

A beaker is used for mixing, stirring, and heating liquids.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

How do you calculate the number of neutrons in an atom?

Back

Number of Neutrons = Mass Number - Atomic Number

Front

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

Back

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

Front

What is the speed of an object that travels 100 meters in 4 seconds?

Back

Speed = Distance / Time = 100 m / 4 s = 25 m/s

Front

What is the difference between a test tube and a beaker?

Back

A test tube is used for holding small amounts of liquid, while a beaker is used for larger volumes and mixing.

Front

What element has the atomic number 19?

Back

Potassium (K) has 19 electrons.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.

Front

What is the purpose of an Erlenmeyer flask?

Back

An Erlenmeyer flask is used for mixing and heating liquids, with a narrow neck to prevent spillage.