properties of water

Question 1

what is the chemical water formula?

Answer 1

H2O

Question 2

what part of a water molecule is positive and negative?

Answer 2

Hydrogen is positive oxygen is negative

Question 3

Explain why water molecules are attracted to one another

Answer 3

The slight negative on the oxygen atoms is attracted to the slight positives of the hydrogen atoms.

Question 4

name the type of intermolecular bonds that hold water molecules to each other and other polar molecules?

Answer 4

hydrogen bonds

Question 5

What can you infer about molecules that water molecules REPEL?

Answer 5

they’re nonpolar

Question 6

What can you infer about the relative density of a substance that sinks in a liquid?

Answer 6

the substance that sinks is more dense than the substance it was placed in

Question 7

Why can water support objects that are more dense?

Answer 7

High surface tension! The strength of the hydrogen bonds at the surface can support objects when they spread out

Question 8

what does pH measure

Answer 8

Hydrogen ions (acidity) and Hydroxide ions (basicity)

Question 9

what kind of solution has a pH below 7?

Answer 9

acidic

Question 10

what kind of solution has a pH above 7?

Answer 10

basic

Question 11

what do acids produce

Answer 11

hydrogen ions (positive)

Question 12

what do bases produce

Answer 12

hydroxide ions (negative)

Question 13

what will happen to the pH of a solution if you add acid

Answer 13

decrease

Question 14

monomer, functions, and example of carbohydrates

Answer 14

monosaccharide,
short term energy
glucose, starch, sugar, plant products

Question 15

monomer, functions, and example of lipids

Answer 15

fatty acid,
long term energy storage,cellmembrane
fats, oils, steroids

Question 16

monomer, functions, and example of proteins

Answer 16

amino acid
regulate chem react, cell struct, tissues
enzymes, muscle

Question 17

monomer, functions, and example of nucleic acids

Answer 17

nucleotide
Genetic code
DNA, RNA

Question 18

What macromolecules are steak, fish, and eggs made of

Answer 18

proteins

Question 19

What macromolecules are fruits and veggies made of

Answer 19

carbohydrates

Question 20

A chain of nucleotides form which type of macromolecule?

Answer 20

nucleic acid

Question 21

A chain of glucose molecules form which type of macromolecule?

Answer 21

carbohydrates

Question 22

A chain of amino acids forms which type of macromolecule?

Answer 22

protein

Question 23

Sucrase can break down the table sugar sucrose into a glucose molecule and a fructose molecule. Identify an enzyme, a monomer, and polymer sucrose. Is this a digestion or synthesis reaction?

Answer 23

enzyme - Sucrase
monomer - glucose and fructose
polymer - sucrose

digestion