periodic table
Each horizontal row of the Periodic Table is Known as a _____.
Period
What is the positive part of the Atom?
A) Electrons Cloud B) Nucleus
B) Nucleus
True or False:
Elements are composed of 2 or more substances.
False
In a covalent bond, atoms ______ electrons.
Share
A charged particle is called an) ______.
Ion
Each Vertical Column on the Periodic Table is Known as a ____.
Group ( or Family )
How do you calculate the number of neutrons in an atom?
Atomic Mass - Atomic Number
True or False:
Compounds are chemically combined, but they can be physically separated.
False
In an ionic bond, electrons are ______ between atoms.
Transferred
Carbon-12 and Carbon-14 have a different number of ____ .
Neutrons
What is the group number of Helium and Neon ?
Group 18 ( the Noble Gases )
Which subatomic particle (proton, neutron, or electron) has no mass?
Electrons
What kind of change (physical or chemical) takes place when water evaporates into the air?
Physical Change
How many valence electrons would Beryllium like to donate?
How many electrons are in an oxygen atom with a charge of -2
10 electrons
Nickel, Copper, and Gold are part of which group ?
The Transition Metals
How many electrons fit in the first three energy levels?
2, 8, 8+10
What type of mixture is salt water?
A)Solution B)Suspension C)Colloid
A) Solution
When carbon shares its valence electrons with 4 Hydrogen atoms, is this an example of an ionic bond or a covalent bond?
Covalent
Isotopes have the same number of ______ ?
A)Neutrons B)Protons C)Atomic Mass
B) Protons
That is the group name of Group #17, and how many valence electrons does each of its elements have ?
Halogens, 7 valence electrons
What makes radioactive isotopes unstable? (Why do the nuclei of these atoms break down?)
There is not a stable amount of neutrons to hold the nucleus together (There are too few or too many neutrons)
Water is considered the "Universal ______."
Solvent
What kind of force holds positive and negative ions together?
Electromagnetic force
Chlorine has 17 Protons, 17 Neutrons, and 17 Electrons. Is this an ion, isotope, or neutral atom?
Isotope