Vocabulary A4 Biochemistry: atoms & molecules

What are the building blocks of MATTER?

• Atoms
• Cells
• Protons
• Neutrons

Which of the following is a substance that can not be broken down into a simpler substance?

• Isotope
• Element
• Compound
• Atomic Number

The negatively charged particles of an atom are the ______.

• electrons
• protons
• neutrons
• protons & neutrons

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

The simplest natural substance is called a(n)

• Element

• Compound

• Mixture

• Solution

The smallest amount you can have of a compound is called a

• Molecule

• Compound

• Atom

• Sprinkle

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number defined as?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Atoms of the same element which have a different number of neutrons are called _________________.

• ions

• isotopes

• quarks

• molecules

What is a positive ion called?

• anion

• cation

• isotope

• covalent