Semester 1 Final Practice

Front

How do covalent bonds form?

Back

Covalent bonds form by sharing valence electrons between atoms.

Front

What type of heat transfer is demonstrated by warm air rising and cool air sinking?

Back

This demonstrates convection.

Front

Which element's atoms are smaller: Neon or Sodium?

Back

Neon has smaller atoms than Sodium.

Front

How many valence (outer) electrons does an Oxygen atom have?

Back

An Oxygen atom has 6 valence electrons.

Front

How many protons does beryllium have?

Back

Beryllium has 4 protons.

Front

What is the definition of a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the principle of convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by temperature differences.

Front

What is the atomic number of an element?

Back

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

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

Front

What is the difference between an element and a compound?

Back

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