APS - Final Exam Practice

Front

What is a product in a chemical reaction?

Back

What's left of the chemical reaction.

Front

Which elements are most likely to form a covalent bond?

Back

H and O

Front

What is the definition of conduction?

Back

When heat transfers from objects that are touching.

Front

In the equation 2Mg + O2 ---> 2MgO, which are the reactants?

Back

Mg and O

Front

During a phase change, what happens to the temperature?

Back

Stays the same.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a covalent bond?

Back

A chemical bond formed by the sharing of electrons between atoms.

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.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.