Basics of Chemistry - Earth Science

What is an element composed of?

• Atoms

• Molecules

• Compounds

How are electrons handled for bonding to make chemical reactions occur?

• Covalent Bonds

• Ionic Bonds

• Metallic Bonds

• Single Replacement

• Decomposition

How are mixture and solutions different from one another?

• Mixtures retain their identity, while solutions do not

• Mixtures and solutions are the same thing

• Mixtures lose their identity, while solutions do not

Which of the following is NOT a property of gases?

• Particles travel at extremely fast speeds
• Have a definite volume
• Particles are separated by large areas of space
• Particles travel randomly and independently

What is the maximum number of energy levels an atom can have?

• 7
• 32
• 2
• 18

What is the center of an atom called?

• Nucleus
• Proton
• Energy level
• Electron

Which of the following elements has a different number of neutrons?

• Carbon
• Neon
• Oxygen
• Chlorine

What is the main difference between radioactive elements and stable elements?

• Radioactive elements have a different number of protons
• Radioactive elements release radiation
• Radioactive elements have different chemical properties
• Radioactive elements have a different number of neutrons

Which of the following is NOT a characteristic of solids?

• Most have a crystalline structure
• Particles travel randomly and independently
• Have a definite shape and volume
• Particles are arranged in a definite pattern

Which of the following is NOT a characteristic of row 8 gases?

• Full outer shells of electrons
• Do not easily bond with other elements
• Do not conduct electricity
• Naturally Occur Alone