States of Matter
What state of matter has a definite volume and takes the shape of its container?
Liquid
How do you find the number of protons?
Atomic number
Where can electrons be found in an atom?
Electron cloud
An ionic bond forms between...
A metal and a nonmetal
Chemical reactions have to obey the law of conservation of mass. What is that?
Matter cannot be created or destroyed only transferred into different forms
Physical change - Evaporation
Chemical change - Rusting
How do you find the number of neutrons?
Atomic mass - protons
What is an ion?
An atom with a charge (gains or loses electrons)
A covalent bond forms between...
A nonmetal and a nonmetal
In a chemical reaction where are the reactants and the products?
Reactants --> Products
What is the difference between a heterogenous mixture and a homogenous mixture?
Heterogenous - Uneven mixture
Homogenous - Evenly distributed mixture
How do you find the number of electrons?
Protons - Charge number
What are the outside electrons called?
Valence electrons
What is the name of the following compound: K2O?
Potassium Oxide
What kind of reaction is in the form A+B-->AB
Synthesis
What can be classified as a pure substance? (2 categories)
Element and compound
Tin-124 is an isotope of tin. How many neutrons does this isotope have?
124 - 50 (atomic number of tin) = 74
An arsenic ion has a charge of 3- and an atomic number of 33, how many electrons does the ion have?
36
What is the formula for Copper(II) Nitride?
Cu3N2
What kind of reaction is in the form A +BC --> B + AC
Single Replacement
What phase changes lose thermal energy?
Melting, Condensation & Deposition
Which elements have the same properties?
Elements in the same group (column)
If Strontium has a 2+ charge and an atomic number of 56, how many electrons does the ion have
54
What is the name for the following compound N3O5?
Trinitrogen pentoxide
What kind of reaction is in the form AB + CD --> AD + CB ?
Double replacement