Early people were producing these types of changes even though they didn't know what was happening. For example - extracting metals from ores and making jewelry.
chemical
100
The inner part of an atom that contains the proton and the neutron is called the __________.
Nucleus
100
The Sun's energy reaches the earth through space by this.
Radiant Energy
100
This is anything that takes up space (has a mass).
matter
100
Atomic numbers of an atom are the same as the number of what in an atom?
protons
200
People thought you could turn iron and lead into what?
gold
200
These particles have a positive charge and are found inside the nucleus.
proton
200
The flow of moving heat through liquid or water.
Convection
200
The smallest pieces of matter are called __________.
atoms
200
Carbon's atomic number is _______.
6
300
The earliest form of chemistry was called _______.
alchemy
300
These particles are located within the nucleus, and have no charge.
Neutron
300
A spoon left in a pot of soup will burn your hand. This is an example of which type of heat transfer?
conduction
300
What type of particle holds the protons and neutrons together in the nucleus?
mesons
300
What element has a number of 56?
barium
400
Names for elements comes from the English or __________ name.
latin
400
These particles are negatively charge and are found outside the nucleus.
electrons
400
Boiling water is an example of
What is convection?
400
Up, Down, Strange, Charm, top and bottom are all names for what type of particle?
quarks
400
Why does hydrogen have an atomic number of 1?
because it only has one proton
500
People first realized that an atom had a proton and an electron in which decade?
10's
500
Most of the mass of an atom is located here.
nucleus
500
DAILY DOUBLE
Running hot water on a jar's metal lid will cause it to _______ making it easier to open.
What is expand?
500
What type of particle are quarks held together by?
gluons
500
Some atoms have more ___________, which makes it an isotope and gives it a negative charge