1st Semester EXAM 24-25

Front

What is the pH level of a base?

Back

A base has a pH level greater than 7.

Front

What family do iron, copper, silver, and gold belong to on the periodic table?

Back

They belong to the Transition Metals family.

Front

What can be found on the periodic table?

Back

Elements can be found on the periodic table.

Front

What is the standard unit for measuring distance in the SI system?

Back

The standard unit for measuring distance in the SI system is meters.

Front

What is a mixture of compounds?

Back

A mixture of compounds consists of two or more different compounds that are physically combined.

Front

What is the definition of an acid?

Back

An acid is a substance that donates protons (H+) and has a pH less than 7.

Front

What is the definition of a neutral solution?

Back

A neutral solution has a pH of 7, meaning it is neither acidic nor basic.

Front

What are alkaline-earth metals?

Back

Alkaline-earth metals are the elements in group 2 of the periodic table, including beryllium, magnesium, calcium, strontium, barium, and radium.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is the definition of a chemical element?

Back

A chemical element is a pure substance that cannot be broken down into simpler substances by chemical means.