Chemistry 101
What is chemistry the study of?
Matter (everything around us)
What is a molecule?
Two or more atoms stuck together
What is an ion?
An atom that gains or loses electrons
True or False: groups on the periodic table go across
False - they go down
What song did we watch to learn the elements?
The Periodic Table Song
What are the tiny building blocks (or lego pieces) that make up everything called?
Atoms
What is a compound?
A molecule made of different kinds of atoms
Are electrons positively or negatively charged?
Negatively charged
Will Sodium (Na) lose an electron and become Na+ or gain an electron and become Na-
It will lose an electron and become Na+
What two new substances are made when you light a match?
Smoke and heat
What are the three parts of an atom?
True or False: All molecules are compounds
False - all compounds are molecules but not all molecules are compounds
If an atom loses an electron, does it become positive or negative?
Positive
Why are noble gases stable?
True or False: Chemistry is important for how our bodies work
True
What parts of the atom are found in the nucleus?
Protons and Neutrons
Give an example of a compound
H2O (water) or CO2 (carbon dioxide)
What is the outermost shell called?
Valence shell
Will an atom with 5 valence electrons gain or lose electrons to become stable?
It will gain electrons
Name one chemical reaction that changed history
Acceptable answers: any from the video we watched
What does the atomic number of an atom tell you?
The number of protons
What happens during a chemical reaction?
Atoms rearrange to form new substances
Why do atoms lose or gain electrons?
To become stable (or have a full outer shell)
What do all the elements in Group 1 of the Periodic Table have in common?
They each have 1 valence electron
How many elements are on The Periodic Table?
118