Pre-AP Chemistry Semester 1 Final Exam

Front

What is the correct measurement of the red line?

Back

8.50 cm

Front

The atomic number identifies the number of __________.

Back

protons

Front

Elements in the same group have similar chemical properties because they have the same number of...

Back

valence electrons

Front

The periodic table is arranged so that elements in the same column have...

Back

similar properties

Front

What is the Volume in the graduated cylinder?

Back

63.5 mL

Front

What is the definition of atomic mass?

Back

The weighted average mass of an element's isotopes.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical properties.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their atomic number and similar properties.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.