Final Exam

What is the smallest unit of an element that retains its chemical properties?

• Atom

• Molecule

• Compound

• Proton

Which of the following is a characteristic property of metals?

• Brittle

• Low melting poing

• Ductile

• Non-conductive

What type of bond is formed when electrons are shared between atoms?

• ionic bond

• Covelent bond

• Metallic bond

• Hydrogen bond

What is the chemical symbol for gold?

• Au

• Ag

• Fe

• Cu

What is the pH of a neutral solution?

• 7

• 14

• 1

• 0

Which gas is the most abundant in Earth's atmosphere?

• Oxygen

• NItrogen

• Carbon Dioxide

• Argon

What is the process of a solid changing directly to a gas?

• condensation

• sublimation

• evaporation

• freezing

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• nucleus

What is the chemical formula for water?

• C0₂

• H₂O

• NaCl

• O₂

Which type of reaction involves the combination of two or more substances to form a new compound?

• Decomposition

• Synthesis

• Combustion

• Single replacement