Chemistry Basics

What is the smallest unit of matter?

• Cell

• Atom

• Planet

• Molecule

What is a group of atoms bonded together called?

• solution

• element

• compound

• molecule

What is a substance made up of only one type of atom?

• Compound

• Solution

• Element

• Molecule

What is a substance made up of two or more different types of atoms?

• Compound

• Solution

• Element

• Mixture

What is a process in which one or more substances are changed into new substances?

• Biological reaction

• Chemical reaction

• Physical reaction

• Emotional reaction

What are substances that release hydrogen ions when dissolved in water?

• Bases

• Acids

• Salts

• Metals

What are substances that release hydroxide ions when dissolved in water?

• Acids

• Salts

• Metals

• Bases

What is the arrangement of atoms in a substance?

• The atom configuration

• The atomic arrangement

• The arrangement of atoms in a substance is the molecular structure.

• The element composition

What is the center of an atom that contains protons and neutrons?

• core

• hub

• nucleus

• centerpiece

What is the outermost part of an atom where electrons are found?

• Neutron shell

• Electron cloud

• Proton cloud

• Electron field