Wk 1 BIO

An ionic bond is a bond in which atoms of ----------------

• positive charge attract each other

• neutral charge, attract each other

• opposite charges, attract each other

• the same charge, attract each other

Tags

NGSS.HS-PS1-3

Your friend Scarlett, who isn't taking the biology course, decides to fill a cup with ice and her favorite drink. Curious, she turns to you and asks, "Why is the ice floating in my drink?" With a smile, you explain that the -------------- apart in ice rather than in liquid water.

• molecules are closer

• molecules are denser

• molecules are heavier

• molecules are farther

Abigail and Aiden are in the lab, and they have a fun task ahead! They need to label beakers for a science experiment. In one beaker, sugars are having a party and polymerizing into a large polymer. What should they write on the label?

• catalysis

• dehydration synthesis

• hydrolysis

• dimerization

Tags

NGSS.HS-LS1-6

In a covalent bond, what do atoms share to form a bond?

• electrons

• protons

• neutrons

Imagine you're in a magical lab with Kai, Mason, and Rohan, sorting enchanted cards into mystical boxes. If you were to place a card into a slot labeled "mass number," it would contain the total number of ------------------ of an atom. Which magical combination would it be?

• protons only

• protons and neutrons

• neutrons only

• electrons

The atomic number of an atom or element is the number of ------------- in the nucleus.

• electrons
• protons
• neutrons
• nuclei

Within a single molecule of water, ____ bonds form between oxygen and hydrogen.

• van der Waals
• ionic
• covalent
• hydrogen

Tags

NGSS.HS-PS1-1

What type of bonds link individual amino acids together?

• Peptide bonds
• Disulfide bridges
• Ionic bonds
• Hydrogen bonds

The most abundant bulk elements that make up the vast majority of living organisms are

• carbon, hydrogen, nitrogen, oxygen

• chlorine, potassium, selenium
• iron, zinc, copper
• calcium, magnesium, sodium

A substance with a pH of 7 is

• a weak acid.

• a weak base.

• neutral.

• a strong acid.