Chemistry Review & Macromolecules

Identify the elements that make up the molecules found in all living organisms. Click on the answers that are correct.

• Carbon

• Hydrogen

• Oxygen

• Nitrogen

• All are correct

Tags

NGSS.MS-PS1-1

Li+ is a cation and F- is an anion. When bonded together they form what type of chemical bond?

• Covalent

• Ionic

• Metallic

• None are correct

Tags

NGSS.MS-PS1-1

CHON are non-metals that when connected form what type of chemical bond(s)?

• Covalent

• Ionic

• Metallic

• None are correct

Tags

NGSS.MS-PS1-1

When identifying an element on the Periodic Table, the PERIOD refers to the

• Column or # of valence electrons

• Row or # of electron orbitals surrounding the nucleus

• Both are correct

• None are correct

When identifying an element on the Periodic Table, the GROUP refers to the

• Column or # of valence electrons

• Row or # of electron orbitals surrounding the nucleus

• Both are correct

• None are correct

Look at the diagram. Which type of chemical reaction would represent "breaking of bonds" and releasing of energy:

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Tags

NGSS.MS-PS1-2

Look at the diagram. Which type of chemical reaction would represent "forming of bonds" and absorption of energy:

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-6

Refer to the diagram. CELLULAR RESPIRATION is considered to be

• endothermic (endo = bring in)

• exothermic (exo = release or exit)

• Both

• Neither

Tags

NGSS.MS-LS1-7

Which properties of H₂O makes this molecule an important universal solvent (able to to dissolve substances to form a solution):

• having + and - ends

• having polar bonds (unequal pull due to + and - ends)

• having ability to form hydrogen bonds

• All are correct

Refer to the diagram. What can be concluded regarding the amount of energy needed to break the single bonds of water molecules and/or elements within a molecule?

• Intramolecular forces that bond elements in a water molecule require 415 kJ/mol per bond to break

• Intramolecular forces that bond hydrogen & oxygen total 830 KJ/mol for 1 molecule of water to break

• Intermolecular forces that bond water molecules together require 41KJ/mol to break

• All are correct

Tags

NGSS.HS-PS1-4