Show:
Atoms
Elements and the Periodic Table
Compounds
The pH scale and acids and bases
Review
100
An atom is made up of three particles. This particle has a positive charge
What is a proton?
100
This is the element represented by the chemical symbol O
What is oxygen
100
Atoms join together with other atoms to form units called
What are molecules?
100
Acids form _______________ ions when dissolved in water
What is hydrogen
100
This is a scientist who studies volcanoes
What is a volcanologist?
200
An atom is made up of three particles. This particle has a negative charge
What is an electron?
200
This scientist first classified all the elements known at the time
Who is Dmitri Mendeleev
200
When atoms join together with different types of atoms, a ________________ takes place
What is chemical reaction?
200
Bases form ______________ ions when dissolved in water
What is hydroxide
200
This type of acid is responsible for acid rain
What is Carbonic Acid?
300
This is a substance containing only one type of atom
What is an element?
300
Elements on the periodic table are classified based on this: the number of protons in the nucleus
What is the atomic number
300
A ________________ reaction occurs when two molecules combine
What is a synthesis
300
These are bases that can dissolve in water are called
What are alkalis?
300
This was the scientist who first coined the term "cell"
Who is Robert Hooke?
400
Protons and neutrons are located in an atom's ___________________.
What is the nucleus?
400
The horizontal rows of the periodic table are called what?
What is Periods?
400
A ____________________ reaction occurs when one compound breaks down into two or more smaller compouds
What is a decomposition
400
_______________ have a pH of below 7
What are acids?
400
Yeast is in this kingdom
What is fungi?
500
Electrons float around these cloud like structures
What is a shell?
500
Elements that have qualities of both metals and nonmetals are called
What are metalloids or semi-metals
500
What kind of atomic bond occurs when atoms share electrons?
What is a covalent bond
500
__________________ have a pH of above 7
What are bases
500
The process by which some sea mammals and bats use to find their food is called this
What is echolocation?