Chapter 12
Solids partials can be described as this...
Close together with a define shape and volume
What is outer most shell of an electron cloud
Valances electrons
True or False Exothermic mean releasing heat.
true
A mixture of two of more elements at least one of the which is a metal.
Alloy
You start a fire with wood and then after burning for awhile it turns to ash. Is this a physical or a chemical reaction?
This is a chemical change
What are the two types of solids
Crystalline and amorphous solids
The atomic number shows what
The amount of protons
True or False the product in a chemical equation comes first.
FALSE
A covalent bond in which electrons are shared equally.
Non-polar bond
Your friend buys a ice cream cone and after walking around for several hours it melts all over his hand. Is this a physical or a chemical change?
This is a physical change.
A inward force, or pull.
2 of these is need to create this...
covalent bond
True or false when calculating for neutrons you divided the protons by the atomic mass
FaLsE
A Chemical reaction that breaks down compound into simpler products.
Decomposition.
What is the difference between a exothermic and Endothermic reaction.
exothermic releases heat and Endothermic takes in heat.
Describe the transition from solid to gas
Solid Melting to make liquid and liquid evaporating to make gas.
Whats a chemical formula
A group of symbols that shows the ratio of elements in a compound
True or False Water molecules are more packed together than ice
FALSEEE
The result of a inward pull among the molecules of a liquid that brings the molecules on the surface, closer together causes surface to act as if it has a thin skin.
Surface tension
The teacher gave the student a F on his recent homework assignment. The student did not want his mom to see it so he put it in his shredder and he shredded the paper. The paper turned into tiny pieces of the paper. Is this a physical or a chemical change?
This is a physical change.
What happens when Gas is heated
High Gas pursue or Partials moving faster
Something that lies between metals and nonmetals in the periodic table
Metalloids
True or False gas is a good sign of a chemical reaction
TRUE
A reaction in which one element replaced another in a compound or when two elements in different compounds trade places.
Replacement.
What are things to look for to see if a chemical reaction has accord
Changes of property or changes of energy, gas productions and color change