Exploring Chemistry and Water Properties for AP Biology

What is the main focus of the first video in this series?

• The properties of water

• The process of photosynthesis

• The structure of DNA

• The differences between ionic and covalent bonds

Tags

NGSS.MS-LS1-6

Which type of bond forms between a metal and a non-metal?

• Metallic bond

• Covalent bond

• Hydrogen bond

• Ionic bond

What is created when a metal loses an electron in an ionic bond?

• Neutral atom

• Anion

• Molecule

• Cation

Which of the following is an example of an ionic compound?

• Magnesium chloride (MgCl2)

• Water (H2O)

• Glucose (C6H12O6)

• Oxygen (O2)

What type of bond involves the sharing of electron pairs between atoms?

• Hydrogen bond

• Metallic bond

• Covalent bond

• Ionic bond

Which molecule is an example of a covalent bond?

• Magnesium oxide (MgO)

• Sodium chloride (NaCl)

• Water (H2O)

• Calcium carbonate (CaCO3)

Tags

NGSS.MS-PS1-1

Why is water considered a polar molecule?

• It has a symmetrical shape

• It is a good solvent

• It has a high boiling point

• It has an asymmetrical charge distribution

Tags

NGSS.MS-ESS2-4

What type of intermolecular force holds water molecules together?

• Van der Waals forces

• Ionic bonds

• Covalent bonds

• Hydrogen bonds

What does a pH of 7 represent?

• Acidic solution

• Highly acidic solution

• Basic solution

• Neutral solution

What is the role of buffers in the blood?

• To increase the acidity

• To maintain a constant pH level

• To decrease the basicity

• To increase the hydrogen ion concentration

Tags

NGSS.HS-LS1-3