Chapter 17
D. Periodic
Which is a term for a pattern that repeats ? A. Isotopic B. Metallic C. Periodic D. Transition
Nucleus
Positively charged center of an atom
C. Electron
Which of the following is NOT found in the nucleus of an atom ? A. Proton B. Neutron C. Electron D. Quark
B. Argon
Which of the following is an element that would have similar properties to those of neon ? A. Aluminum B. Argon C. Arsenic D. Silver
Period
A____ is the horizontal row in the periodic table
Compare- they have the same elements and properties Contrast- chlorine -37 has 2 more neutrons that chlorine -35
Compare and contrast chlorine -35 and chlorine -37 isotopes.
A. 1
How many outer level electrons does lithium have ?
Electron cloud
In the current model of an atom, the electrons are located in the _________
A. Gas
In which of the following states is nitrogen found at room temperature ? A. Gas B. Metalloids C. Metal D. liquid
D. Solid
In which state of matter are most of the elements to the left of the stair- step line in the periodic table ? A. Gas B. Liquid C. Plasma D. Solid
Periodic table
Mendeleev created an organized table of elements called the
Mass number
The _____ is the sum of the number of protons and neutrons in an atom
Electron cloud
The area where modern scientists think electrons are likely to be found
B. 111
The atomic number of Re is 75. The atomic mass of one of its isotopes is 186. how many neutrons are in an atom of this isotope ?
D. 17
The halogens are located in which group ? A. 1 B. 11 C. 15 D. 17
B. Neutrons
The number of which type of particle determines the identity I that element ? A. Electrons B. Neutrons C. Protons D. Photons
Atom
The smallest piece of matter that keeps the properties of the element to which it belongs is called an _____
Quarks
There are six very small particles that make up protons and neutrons ___
Quarks
There are six very small particles that make up protons and neutrons and they are ______
Isotopes
Two elements with the same number if protons but a different number if neutrons are called ______
Atoms of the same element that have different numbers of neutrons.
What are isotopes ?
The atomic mass a particle has
What is the atomic mass of an atom
The number of protons in the nucleus
What is the atomic number of an atom
Total number of protons and neutrons
What is the mass number of an atom
B. Metalloid
Which Of the following terms describes boron ? A. Metal B. Metalloid C. Noble gas D. Non metal
B. Group 18 because they are noble gases
Which group of elements on the periodic table is the least reactive ? A. Group 1 B. Group 18 C. Group 2 D. Group 17
D. Magnesium
Which if the elements below is a shiny element that conducts electricity and heat ? A. Chlorine B. Sulfur C. Hydrogen D. Magnesium
Average atomic mass
is the weighted average mass of all the known isotopes for an element
