Q1 (H.Chem) Midterm Review (Due day of Final)

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy that an object possesses due to its motion. It is dependent on the mass and velocity of the object.

Front

How is kinetic energy related to particle motion?

Back

The amount of kinetic energy in a particle diagram indicates how fast the particles are moving. More movement means higher kinetic energy.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout. Examples include saltwater and air.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform throughout. Examples include salad and sand.

Front

What defines a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What are significant digits?

Back

Significant digits are the digits in a number that contribute to its precision. They include all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you determine the number of significant digits in a calculation?

Back

The result of a calculation should be reported with the same number of significant digits as the measurement with the least number of significant digits.

Front

How many inches are in 2 feet?

Back

There are 24 inches in 2 feet, as 1 foot equals 12 inches.

Front

What is the formula for converting feet to inches?

Back

To convert feet to inches, multiply the number of feet by 12.