general
What is the Law of Conservation of Energy
Energy can not be created or destroyed, only transferred or converted.
As a ball rolls down a hill, identify the different energy transfers and conversions.
Gravitational potential energy, motion kinetic energy, Thermal kinetic energy
What is the key difference between a compound and a molecule?
Molecules consist of 2 or more atoms chemically bonded.
Compounds consist of 2 or more atoms chemically bonded of more than element.How many chambers does the human heart have?
Four
Name 2 examples of kinetic energy and 2 examples of potential energy.
kinetic:
motion, thermal, radiant, sound, mechanical, electrical
potential:
nuclear, elastic, gravitational, chemical
What is sublimation?
When a chemical goes directly from solid to gaseous state, without going through the liquid state
The number of protons in an atom can be determined by the __________ of the element taken directly from the periodic table.
atomic number
Which organ is responsible for most of the chemical digestion and absorption in the digestive system?
Small intestine
What are 3 differences between plant and animal cells?
Plant cells have cell walls, chloroplasts and a large vacuole.
Name 3 things that speed up the rate of chemical reactions.
Heat, concentration, surface area, catalysts
Name the group on the periodic table that is almost completely unreactive.
Noble gases
Which category of microbes are technically not classified as living things?
Viruses
Name at least 3 types of states of matter.
solid, liquid, gas
Name the other types of lenses on a compound microscope that work with the ocular lens to magnify objects.
Low medium and high power objectives
A light ray going from a high to low index of refraction would do this.
Refract away from the normal.
What is the name of the enzyme in our saliva that helps us break down starches into simple sugars?
Amylase
Give 3 names of specialized cells and their functions
Nerve, leaf, RBCs, Muscle,........
How many chromosomes does the average human body have in their cells?
23 pairs, or 46 total
What is a metal with an atomic number of 12
Mg
Name the structure in the lungs shaped like a microscopic balloon where gas exchange takes place.
Alveoli