Atoms
the 3 subatomic particles
what is a proton, neutron, and electron
This particle is used to identify an element
what is number of protons?
These are vertical columns on a periodic table
What is a group?
These are found on the left side of a chemical equation
What is the reactants?
When a substance changes into another substance with different properties
What is a chemical change?
the location of protons and neutrons
What is the nucleus?
This number tells you the number of protons
What is the atomic number?
These are horizontal on a periodic table
What is a period?
These are found on the right side of a chemical equation
What is the product?
H20
CO2
CH4
What is a Compound
The atomic number is equal to these positive particles
What is a proton?
These determine how reactive an element is
What are valence electrons?
The atomic number tells us how many __________ an element has in its nucleus.
what is protons
2C4H10O has how many atoms
What is 30?
when a shiny metal bicycle is left out in the rain for days and is now dull, orange, and flaky
What is rust?
Which particle has the lightest mass
What is Electron
Name 1 element that reacts like Ar
What is helium, neon, krypton, xenon or radon
What is the rule of 2,8,8?
what is there can be 2 valence electrons in the 1st energy level and 8 in the 2nd and 3rd energy level?
6CO2 + 6H2O → C6H12O6 + 6O2 has how many oxygen in the reactants
What is 18?
color change, formation of a precipitate, formation of a gas, odor change, temperature change
What is signs of a chemical change?
a type of model where you plot the valence electrons on the energy levels
What is a bohr model?
this can seen on a periodic table and tells you the number of valence electrons
What is a group number?
These are the most reactive group
what is group 17?
matter is not created or destroyed and the amount of mass stays the same is part of what law?
What is the law of conservation of mass?
If you mix two clear liquids and a new solid substance forms, what is it called?
What is a precipitate