Parts of an Atom
Water Properties
Bonds
Macromolecules
pH
100
What has a positive charge inside the nucleus of an atom?
proton
100
What is the name given to water, as it can dissolve many compounds?
universal solvent
100
What is a bond which electrons are transferred?
ionic
100

What is the biomolecular name for sugars?

carbohydrates

100
What is having a higher concentration of H+ ions called?
acid
200
What is formed when an atom gains or loses an electron
ions
200
What causes 2 or more water molecules to stick together?
hydrogen bonds
200

What kind of bond involves sharing electrons?

covalent

200

Amino acids are the building blocks for which macromolecules?

protein

200
Ammonia has a pH of 12. What is this called?
base or alkaline
300
If an atom has an atomic number of 8, how many electrons are present?
8
300

What is the name for water "sticking" to another surface, such as forming a meniscus (curve) in a cylinder?

adhesion

300

What are molecules called that have a partial positive and partial negative end?

polar

300

What type of macromolecule are enzymes?

proteins

300
What is added to control pH from rising or dropping?
buffer
400
Where do electrons orbit?
outside the nucleus
400

What causes the invisible film on water that makes it look like insects are walking on water?

cohesion

400

Which end of a water molecule is partially negative?

oxygen

400

What macromolecules monomers contain sugar, phosphate group, nitrogenous base?

nucleic acids

400
The closer the pH is to zero, the __________the acid
stronger
500

What do you call atoms that have the same atomic number but different mass numbers?

isotope

500

What is "water sticking to water" called?

cohesion

500

If an atom loses electrons, what charge does it take on?

positive

500

What kind of lipid has no double bonds between the carbons?

saturated fat

500

If a substance has a pH of 7, what is it?

neutral

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