A substance that is made up of only one type of partical.
What is a Pure Substance.
100
Everything that exists, including all energy, matter and space.
What is the Universe.
100
A pure substance that cannot be broken down into simpler chemical substance by any physical or chemical means.
What is an Element.
100
A form of charge, either positive or negative, that exerts an electric force.
What is an Electric Charge.
100
The system of argriculture that relies on non-synthetic pesticides and fertilizers.
What is Organic Farming.
200
It divides the metals from non-metals on the periodic table.
What is the significance of the bold staircase line on the periodic table?
200
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune are all planets listed in what order?
What is closest to farthest from the sun.
200
Who designed the early periodic table on which the mondern one is based?
Dmitri Mendeleev.
200
What is the difference between a Joule and a Watt?
What is the difference between a Joule and a Watt?A joule is a unit of electrical energy. A watt equal to one joule per second.
200
What does WHIMS stand for?
Workplace Hazordous Information System.
300
~Electrons orbit the nucleus of the atom, much like the planets orbit the sun.
~Each electron in an orbit has a definate amount of energy.
~The farther the electron is from the nucleus the greater it's energy.
What is Niel Bohr's theory.
300
In which region of the sun do nuclear fusion reactions take place?
a)radiactive zone
b)photosphere
c)corona
d)core
What is core.
300
~Boron
~Silicon
~arsenic
What is a meteloid.
300
The rapid transfer of electirc charge from one object to another.
What is Electric Discharge?
300
The varity of life in a particular ecosystem; also known as biological.
What is biodiversity.
400
0.63 cm3A sample of pure zinc has a measure of 4.50 grams, what is its volume?
0.63 cm3
400
1. Moon 2. Polaris, 3.CometsList 3 different objects you can see in the night sky even if you are in the city.