Unit 1 Chemistry of Life Review

The atomic number of an element is defined as the number of what?

• Neutrons

• Electrons

• Protons

• Ions

An atom of phosphorus contains which of the following?

• Protons, neutrons, and electrons

• Only protons and electrons

• Only neutrons and electrons

• Only protons and neutrons

The movement of water upward from the roots to the leaves is partially due to which property of water?

• Adhesion

• Cohesion

• Evaporation

• Condensation

Tags

NGSS.MS-ESS2-4

What is removed during dehydration synthesis?

• A hydrogen atom

• A water molecule

• An oxygen atom

• A carbon atom

Which of the following is NOT a characteristic of carbohydrates?

• Contains CHO

• Provides energy

• Forms proteins

• Includes sugars

Which of the following is a property of water that helps it move through plants?

• Density

• Cohesion

• Viscosity

• Solubility

Tags

NGSS.MS-ESS2-4

What are the properties of water?

• Water is non-polar and hydrophobic.

• Water has a high heat capacity and is a good solvent.

• Water is a poor solvent and has low surface tension.

• Water is non-polar and has low heat capacity.

Tags

NGSS.HS-ESS2-5

What type of molecules are water molecules?

• Non-polar covalent molecules.

• Polar covalent molecules.

• Ionic molecules.

• Metallic molecules.

What is the result of the uneven distribution of electrons in water molecules?

• Formation of ionic bonds.

• Formation of metallic bonds.

• Formation of hydrogen bonds.

• Formation of covalent bonds.

Tags

NGSS.HS-PS2-6

During an experiment, which factors are observed and measured?

• Independent Variables

• Dependent Variables

• Control Variables

• Random Variables

Tags

NGSS.MS-PS2-2