Periodic Table
What kind of elements are on the "ladder" separating the periodic table?
Metalloids
What is the charge on a proton?
Positive
Hydrogen
H
What state of matter is a chair at room temperature?
Solid
What is a balanced chemical equation?
A chemical equation that has the same number of atoms on both the reactant and product side.
What group are called Halogens?
7A (17)
What is the charge of a neutron?
Neutral
Phosphorus
P
What state of matter is CO2 at room temperature?
Gas
What is a coefficient?
The number before a chemical symbol in an equation- shows how many atoms are in the equation.
What are the metals between groups 2A and 3A called?
Transition Metals
What determines the atomic number of an atom?
The number of protons
Radium
Ra
What state of matter is an ice cube at room temperature?
liquid
The number below/after the chemical symbol in the equation, shows how many
What determines the atomic mass of an atom?
The total number of protons and neutrons the atom
What are the kinds of subatomic particles?
Proton, Neutron, Electron
Sodium
Na
What state of matter is hydrogen chloride at room temperature?
Gas
What is a nucleus/what does it contain?
The core of an atom, includes protons and neutrons
How many electrons are in the outermost energy level of Helium?
2
Atoms of the same element are _______.
Identical
Tin
Sn
When water starts to turn into a gas, what temperature is it in Fahrenheit?
212 degrees Fahrenheit
What is an electron?
Negatively charged particle, located outside of the nucleus.