What state contains particles that are very close together?
Solid
100
What is found in the nucleus of an atom?
Protons and neutrons
100
What kind of compound is propane (C3H8)?
Molecular
100
Which one of the four ways to increasing reaction rates is chewing your food an example of?
Increasing surface area
200
What is sugar an example of?
Compound
200
What are 3 pieces of evidence for a chemical change?
gas given off, soild forms, hard to reverse, color change, ect.
200
What are two properties of metals?
conducts electricity, shiny, solid
200
What is the number of elements in the compund CuNO3?
3
200
What is the differences between endothermic and exothermic reactions?
Endothermic absorb heat and exothermic release heat
300
What is water an example of?
Compound
300
What is the formula for dinitrogen monoxide? Is it molecular or ionic?
N2O
Molecular
300
What is the number of protons, neutrons, and electrons for sodium?
11 protons, 12 neurtons, and 11 electrons
300
What are two properties for molecular compounds?
strong bonds, one or more non-metals, can be soild, liquid or gas, are insulators, low melting and boiling points
300
What is Law of Conservation of Mass?
The mass of the reactants will be the same mass of the products
400
What is a soultion. Give an example.
Homogeneous mixture; two or more pure substances. Example vinegar
400
What is the name for Ag2S? Is it molecular or ionic?
Silver sulfide Ionic
400
What are two examples of groups on the periodic table?
Alkaline earth metals, noble gases, halogens, and alkali metals
400
What are two properties of ionic compounds?
metal and non-metal, soulble, high melting points, conduct electricity
400
What is the word equation for hydrogen gas and zinc sulfate are produced from the reaction of zinc and sulfuric acid?
zinc + sulfuric acid -> zinc sulfate + hydrogen
500
What is it called when a solid turns into a gas?
Sublimation
500
What is the name for N2O3?
dinitrogen trioxide
500
What element is in group number 12 and period number 6? What state is it in at room temperature? How many protons does it have? What is it's atomic mass?
mercury, liquid, 80, 200.6
500
What is a property that can be common to both ionic and molecular compounds?
can be solids at room temperature
500
What are the four factors to increase the rate of a reaction?
increase temperature, increases surface area, increase the concentration of the reactants, use of a catalyst