Which of these is NOT one of the basic pieces of an atom?
Electron
Quantron
Proton
Neutron
quantron
100
How many electrons can the second electron cloud hold?
eight
100
Which correctly describe the order of elements from left to right on the periodic table?
A. solid, liquid, gases
B. nonmetals, metalloids, metals
C. metals, solids, gases, nonmetals
D. metals, metalloids, nonmetals
D
100
The atomic number of an element tells you the number of ___________ in a neutral atom.
protons or electrons
100
What are the chemical symbols for Mercury, Tin, Tungsten and Sodium?
Hg, Sn, W, and Na
200
Which atomic particles will you find inside the nucleus?
protons and neutrons
200
How many electrons will calcium have in its outer most cloud?
11
It has 21 electrons (2,8,11)
200
What element shares properties or characteristics with potassium?
a. tungsten
b. lithium
c. iron
d. helium
Lithium
They are in the same group.
200
What are the major differences between rows and columns on a periodic table?
groups and periods; similar and different characteristics.
200
Compare and contrast chemical and physical change.
one produces a new substance while the other does not
300
Can electrons be found in any electron cloud? Explain
No, electrons must fill the clouds closest to the nucleus first, then proceed to the next cloud, filling them in order.
300
Why are atomic models important?
They share information about the subatomic particles of the atom. They can show you the number of electrons in the valence shell. ....
300
Which classification has the following properties?
insulator, brittle, dull, mostly gases
nonmetal
300
The scientist credited with devising the first periodic table similar to the one we use today was:
a. John Dalton
b. Gregor Mendel
c. Dmitri Mendeleev
d. Ernest Rutherford
Dmitri Mendeleev (c)
300
Give an example of an exothermic reaction.
heat released or given off (any example related to that)
400
Compare and contrast the size of the particles in an atom.
Electrons are the smallest in mass and make up very little of the atom's mass. Protons and neutron have about the same mass and contain the majority of the atom's mass (nucleus).
400
View the following list. Each represents the number of neutrons for several elements. Which set represents sodium, mercury, lead and potassium?
a. 16,12,4,16
b. 12,12,21,16
c. 12,121,125,21
d. 12,121,125,16
C
23-11
201-80
207-82
40-19
400
Which of the following is in the correct order?
a. alkaline earth, noble gases and transition
b. transition, halogen and noble gases
c. alkali, halogen, and transition
B
400
How many elements appear in the most current periodic table?
118
400
What part of the cell makes protein?
ribosomes
500
What particle is exchanged or shared during atomic bonding?
electrons
500
Identify the following atoms. (See power point slide)
sodium, helium and germanium
500
List three metalloids.
B, Si, Ge, As, Sb, Te, and Po
500
What is reactivity and how does it relate to the periodic table?
reactivity decreases from left to right on the periodic table
alkali metal are the most reactive and noble gases are the least reactive (stable)
500
What is a mass extinction? Explain a possible cause.
when a large number of living things die in a short amount of time. Ex. volcanic eruptions, meteorites, Ice Age....