IPC Fall Semester Exam

Front

Covalent bonds are formed between:

Back

Two or more nonmetals.

Front

What type of change occurs when milk goes sour?

Back

Chemical change.

Front

What group number are the halogens found in?

Back

17 (7A).

Front

How many neutrons does the isotope of lithium have?

Back

5.

Front

In which period is Lead (Pb) located?

Back

6.

Front

What is a covalent bond?

Back

A chemical bond formed by the sharing of electron pairs between atoms.

Front

Define a physical change.

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What are the main characteristics of metals?

Back

Good conductors of heat and electricity, malleable, ductile, and typically have a shiny appearance.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.