Bio 212 Exam 1 Ch 1-5 Verified Questions And
Answers Rated A+
matter is ANS -anything that has mass and takes up space
-made up of elements
A good example of elements combining to show emergent properties is ANS water
Trace elements in the human body are mainly ANS COHN then phosphorus, calcium, potassium, and
sulfur
The strongest bonds are ANS -covalent in molecules (water)
-ionic in dry ionic compounds
Ionic bonds are weak because ANS -they are in water
-transfer not sharing of electrons
endogenous ANS means were made within the body
the making and breaking of chemical bonds are ANS chemical reactions
Photosynthesis for food and oxygen is ANS foundation of life in almost all ecosystems
Which occurs faster at equilibrium? Formation of reactants or products? ANS They occur at the same
rate
Isotopes differ in ANS the amount of neutrons
polar molecule means that ANS its overall charge is unequally distributed
, cohesion is ANS -hydrogen bonds holding water molecules together
-high surface tension
-spiders can walk across a pond due to tension
-contributes to transportation of nutrients and water against plants gravity
Adhesion is ANS -clinging of water molecules from itself to another substance
Thermal energy depends on the ANS volume
Water is known for having ANS -high specific heat
-1 cal/g
-absorbs or loses lots of energy with each degree change
increase in heat ANS increases the kinetic energy speed
ability of ice to float has to do with ANS ice's lower density
Like dissolves like so the best compounds to dissolve in water are ANS polar compounds
hydrophillic substances have ANS an affinity for water without dissolving
-ex) cotton towel can absorb water but not dissolve
-cellulose
hydrophobic substances have ANS -repels water
-nonionic and nonpolar molecules
Describe how properties of water contribute to the upward movement of water in a tree ANS
Capillary action brings up the water through the roots with help of adhesion and cohesion
Answers Rated A+
matter is ANS -anything that has mass and takes up space
-made up of elements
A good example of elements combining to show emergent properties is ANS water
Trace elements in the human body are mainly ANS COHN then phosphorus, calcium, potassium, and
sulfur
The strongest bonds are ANS -covalent in molecules (water)
-ionic in dry ionic compounds
Ionic bonds are weak because ANS -they are in water
-transfer not sharing of electrons
endogenous ANS means were made within the body
the making and breaking of chemical bonds are ANS chemical reactions
Photosynthesis for food and oxygen is ANS foundation of life in almost all ecosystems
Which occurs faster at equilibrium? Formation of reactants or products? ANS They occur at the same
rate
Isotopes differ in ANS the amount of neutrons
polar molecule means that ANS its overall charge is unequally distributed
, cohesion is ANS -hydrogen bonds holding water molecules together
-high surface tension
-spiders can walk across a pond due to tension
-contributes to transportation of nutrients and water against plants gravity
Adhesion is ANS -clinging of water molecules from itself to another substance
Thermal energy depends on the ANS volume
Water is known for having ANS -high specific heat
-1 cal/g
-absorbs or loses lots of energy with each degree change
increase in heat ANS increases the kinetic energy speed
ability of ice to float has to do with ANS ice's lower density
Like dissolves like so the best compounds to dissolve in water are ANS polar compounds
hydrophillic substances have ANS an affinity for water without dissolving
-ex) cotton towel can absorb water but not dissolve
-cellulose
hydrophobic substances have ANS -repels water
-nonionic and nonpolar molecules
Describe how properties of water contribute to the upward movement of water in a tree ANS
Capillary action brings up the water through the roots with help of adhesion and cohesion
