Atoms and Energy
What is the name for stored energy of an object due to composition or position?
a. Potential Energy
b. Thermal Energy
c. Kinetic Energy
d. Mechanical Energy
A. Potential Energy
The amount of space matter takes up is...
a. density
b. composition
c. mass
d. volume
d. volume
What is the common name for H2O?
Water
True or False? Atoms are composed mainly of photons?
False
---- is described by having both speed and direction.
Velocity
Which is larger, a neutron or an electron?
A neutron is about 1,839 times larger than an electron.
Which of these terms would combined water and sand best represent?
a. element
b. solution
c. compound
d. mixture
d. mixture
Which is the solvent and which is the solute?
Water and Salt
Water = Solvent
Salt = Solute
In magnets, do two positive ends attract or repel each other?
Repel
True or false - Perpetual motion is impossible to achieve.
True
Does an electron have a positive or negative charge?
Negative charge, Protons have positive charge, Neutrons are electrically neutral.
The periodic table of the elements represents/describes different types of what? In other words, a pure element is made up of only one type of...
Atom, each element represents a different type of atom.
Which of these involves a chemical change?
a. Mixing sand and water
b. Burning paper
c. Crushing a diamond
d. Writing on paper
B. Burning paper
True or False - Everything with mass also has gravity.
True - you pull on the earth just like it pulls on you (you're just much smaller)
Energy cannot be ----
a. increased or decreased in regard to an objects potential or kinetic energy.
b. transferred or absorbed
c. created or destroyed
d. transferred via rays, or via waves.
C.
(Very) Approximately how many atoms are in a single cell?
a. 100 Billion
b. 1 Billion
c. 100 Trillion
d. 5 Million
c. 100 Trillion, there's around 30-40 Trillion cells that make up a person.
Name the four states of matter (100 each)
Solid, Liquid, Gas, Plasma
The amount of matter in a solid, liquid or gas is called what?
a. Volume
b. Essence
c. Mass
d. Density
C. Mass
True or False - Infrared light has a shorter wavelength than UV (ultraviolet) light
True
An objects tendency to either remain in motion (if already in motion) or at rest (if already at rest) relates to what property of matter?
Inertia
Radio waves, microwaves, infrared radiation, visible light, gamma radiation, X-rays
When you dissolve a solute into a solvent, what do you have?
A solution
If something has a pH of less than 7, what is it?
Acid
Order the 7 colors of the rainbow from longest wavelength to shortest.
Red, Orange, Yellow, Green, Blue, Indigo, Violet
If you dropped two weights of the same size/shape, one weighing 10 lbs. and the other 20 lbs., from the same height (say 50 ft.) which would hit the ground first?
Could a penny dropped from the empire state building's roof kill someone down below?
Hit ground at same time.
No. Air resistance.