Basic Chapter 1 Assessment

Freezing water is an example of a _____________.

• Chemical Change

• Decomposing Process

• Physical Change

• Chemical Reaction

Two or more atoms chemically bonded together is called a(n) ____________.

• Element

• Molecule

• Ion

• Electron

When an ion has an extra electron and thus carries a negative charge, it is called a(n) __________.

• Element

• Cation

• Anion

• Polar Molecule

Atoms are made up of particles called ________.

• Protons

• Neutrons

• Electrons

• All of the Above

Similar charges ions (+,+) are attracted to each other and different charged ions (+,-) are repelled by each other.

• True

• False

What are the gasses commonly dissolved in ground water?

• H₂S, Hydrogen Sulfide

• CO₂, Carbon Dioxide

• O₂, Oxygen

• CH₄, Methane

• All of the Above

Water that has high turbidity, low dissolved solids, and bacteria growth is most likely from which source?

• Surface Water

• Ground Water

Which stage of the water cycle can increase dissolved solids, but also decrease suspended solids?

• Evaporation

• Transpiration

• Condensation

• Precipitation

• Percolation

Which of the following is a cation?

• Carbonate (CO₃^-)

• Chloride (Cl^-)

• Sodium (Na⁺)

• Potassium Permanganate (KMnO₄)

As water freezes, its density _________.

• Increases

• Decreases

• Stays the Same