Ch 1 & 2 Test

What is your first and last name?

Identify the reactant(s) in the chemical reaction

• CO2, H2O, and H2CO3
• CO2 and H2O
• H2CO3
• CO2

A polysaccharide is a

• carbohydrate
• lipid
• nucleic acid
• protein

What is the process that changes one set of chemicals into another set of chemicals?

• cohesion
• adhesion
• chemical reaction
• dissolving

A covalent bond is formed as the result of

• transferring electrons
• sharing electrons
• transferring protons
• sharing protons

The energy needed to get a reaction started is the

• adhesion energy
• activation energy
• cohesion energy
• chemical energy

The basic unit of length in the metric system is the

• gram
• liter
• yard
• meter

How many meters are in 3.7 km?

• 370
• 3,700
• 37,000
• 370,000

Safety procedures are important when working

• in a laboratory
• in the field
• with animals
• all of the above

Based on your observations, you suggest that the presence of water could accelerate the growth of bread mold. This is

• a conclusion
• a hypothesis
• an experiment
• an analysis