Which of the two substances is the most reactive:
One that vaporizes at room temperature
One that ignites when exposed to heat.
What is, One that vaporizes at room temperature
100
The periodic table is organized by atomic number. What does the atomic number represent?
What is the number of protons.
100
Elements that are hard, shiny, dense, conduct electricity and have a high melting point are most likely to be
What is a metal
100
Metal melts at 500 degrees is an example of which type of property. (physical or chemical)
What is physical
100
dissolving sugar in water is an example of what
What is homogeneous Mixture .
200
What is the most reactive group?
What is group q
200
Go tho the periodic table and point to the region of the table represents inert gases?
What is group 18
200
elements in the same column have the same
What is chemical properties.
200
Name the two chemical properties.
What is reactivity and flammability.
200
Describe how particles move when energy is added.
What is they move farther apart.
300
Name two elements that are have 8 electrons in their outer shell.
What is: any of the two.
helium, neon, argon krypton, xenon, radon
300
Show or explain where the nonmetals are on the periodic table. Do not include the noble gasses.
What is Show everything that is to the right side of the zigzag line except for group 18. Must include hydrogen in group 1 to get it correct.
300
When 2 or more elements chemically combine a _____________ is created.
What is a compound.
300
List 5 physical properties
What is the teacher will confirm
300
Describe a chemical reation
What is 2 or more elements or compounds recombine to make something brand new.
400
List the following elements form greatest to least reactive:
Magnesium, Gold, Potassium, Iron, Copper
What is Potassium, magnesium, iron copper, gold
400
What do periods tell us about an atom.
What is how many shells it has.
400
What name of the category of elements that lies along the zigzag line.
What are the metaloids.
400
A block with a mass of 40 grams and a volume of 60 cm3 is cult in half. What physical property will be the same for both pieces
What is density
400
A block of wood has a mass of 144 G. Its dimensions are 2cm by 3cm by 2cm. What is the density of the wood? Must have the correct unit to get credit.
What is 12 grams /cm
500
The most reactive metal
What is sodium
500
Explain the meaning of all the information the table tile labeled K going from top to bottom Must get everything correct for points to be awarded
What is 19 is the atomic number and it is the number of protons that an atom has. K is the element symbol for potassium. The number at the bottom is the average atomic mass.
500
Where are the atoms with the greatest atomic mass located on the periodic table.
What is the bottom
500
Iron has a density of 4.0 and wood has a density of .7. If I have a 5 grams of each sample, which one would have a greater volume.
What is wood. It is less dense and therefore, there would need to be more of it.
500
Explain how to determine the volume of an irregular object.
What is fill a graduated cylinder with water and record the level. place the object in the cylinder and record the change in water level. Subtract the 1st amount from the 2nd amount.