Vocabulary
Molecule
two or more atoms bonded together
Falling raindrops exhibit
cohesion
Water has a pH of 7
exactly neutral
Hydrogen ion
H+
Define "community"
all the species in an area
Housecats share roughly what percent of DNA with tigers
95%
two or more atoms sharing valence electrons
Surface tension is due to
cohesion
TUMS antacid has a pH of 10
basic
Hydroxide ion
OH-
Define "population"
a group of the same species
Humans have 206 bones. How many do cats have?
230
Ionic bond
electrical attraction between positively and negatively charged ions
A frog's wet skin allows it to climb surfaces due to
adhesion
Milk has a pH around 6.7
slightly acidic
Hydrophobic
something that does not mix with water
Which of the 4 evolutionary mechanisms is random and why?
Genetic Drift
It is hypothesized that cats only meow to
communicate with humans <3
Specific heat
the amount of energy needed to raise the temperature of a substance
When placed in water with food dye, celery will turn color due to
adhesion
Hydrogen (H+) ions
acidic
Hydrophilic
something that mixes with water
Name 3 qualities of living things
Any 3 of these:
1. Living things are composed of cells
2. Living things maintain homeostasis
3. Living things respond to stimuli from their environment
4. Living things acquire and use materials and energy from their environment
5. Living things grow
6. Living things reproduce themselves using DNA
7. Living things, as a whole, have the capacity to evolve
Ms. Blaney has how many cats
2
Buffer
something that releases the opposite ion, causing the base or acid to become neutralized
A meniscus is formed by
cohesion and adhesion
Hydroxide (OH-) ions
basic
Hydrogen bond
attraction between polar molecules
In an experiment, what are variables?
differences between the control group and experimental group which might affect your results
Only female cats can have this color pattern
Calico or Tortoiseshell