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Physical science

Chapter 5

QuestionAnswer
In Mendeleev's periodic table, elements in each column had similar? properties.
How was Mendeleev's periodic table arranged? By increasing atomic mass.
Each column of the periodic table is? A group.
As you move from up to down in the column of the periodic table, elements have? a higher atomic number.
The three main groups of elements are metals, non-metals, and what? semiconductors.
Most elements are? Metals.
When can semiconductors conduct heat and electricity? under some conditions.
In his version of the periodic table, Mendeleev based his arrangement of the elements of an element's? atomic mass.
Ionization refers to the process of? losing or gaining electrons
Elements in a family often have a similar? Appearance.
Which statement about the alkali metals is correct? They are located in the left-most column of the periodic table.
Which statement about noble gases is correct? they exist as single atom rather as molecules.
Group 18 noble gases are relatively inert because? their s and p orbitals are filled.
Which element is a semiconductor? silicon
Mendeleev studied the properties of the element and look for? patterns.
As one moves from left to right across a period in the modern periodic table, elements become? less metallic.
metals tend to be? good conductors of heat.
Transition metals such as copper or tungsten form compounds by? losing electrons form positive ions.
A compound differs from mixture because it? is held together by chemical bonds.
often atoms join so that each atom will have? an outermost energy level the is full of electrons.
In which type of bond do atoms share electrons? covalent bonds.
When nickel combines with fluorine to form nickel (III)fluoride, the change of the nickel ion is? Ni3+
a carbon atom can bond to four other atoms because it has? four valence electrons
Atoms and ions are held together by? chemical bonds.
the attraction between molecules tends to be the attraction between ions? Weaker then.
sugar has a lower melting point then salt because sugar is made of? Molecules.
A hydrogen bond between water molecules is which of the following when compared with the bonds within an individual water molecules? It is weaker.
A compound with only two atoms would not have a bond angle.
Which of the following models would show the bond angle? ball-and-stick
copper atoms are held together by____ bonds? Metallic.
An ionic compound of calcium and chlorine would be named calcium chloride.
An ionic compound made of copper and oxygen would be named. copper(II) oxide.
The covalent compound N2O5 would be named? dinitrogen pentoxide.
All organic compounds must contain the element? carbon.
the name for the compound with the formula CuBr2 would be written as? copper(II)bromide.
each molecule of table sugar C12H22O11 contains? 12 atoms of carbon.
gases take up alot of space because gas molecules? are not attracted to one another.
covalent bonds are formed between nonmetals atoms
neon is an inert gas because its outer____________is full of electrons? energy level.
Group 17 halogens form compounds by gaining an electon to become. negative ions.
One of the important ideas about Mendeleev's periodic table was that he predicted new. elements.
some elements are highly_________because their outer most energy level are only partially filled. reactive.
Elements that are usually shiny are? metals.
Mendeleev started a new_____ in his periodic table when properties repealed. row.
The__________states that when elements are arranged by atomic number, elements with similar propertise appear at regular intervals. periodic law.
The number of valence electrons largely determines the_________properties of each group in the periodic table, chemical.
The valence electron of a lithium atom is easily removed to form a lithium _______ with a charge of 1+. ion/cation
Group 1 of the periodic table consists of the _______ a highly reactive group of elements. alkali metals.
The __________ are reactive elements in Group 17 in the periodic table. halogens
When elements combine to form a ________, the resulting propertise may be very different from those of the elements that make it. compound.
The arrangement of________ or ________ within a substance i s its chemical stucture. Atoms; ions
Each carbon atom can form a total of _____ bonds four.
Formula units of salt, NaCI, contains equal numbers of _____ and _____. sodium ions: chlorine ions
In ionic compounds, the positively charged ions are formed __________ elements. metal.
The simplest formula for a covalent compound is its. empirical formula.
When to chlorine atoms bond, They _______________ a pair of electrons. Share.
elements that have properties of both metals and nonmetals. semiconductors.
reactive elements of Group 17 that are poor conductors. Halogens
highly reactive elements that belong to group 1. alkali metals.
elements that belong to groups 3-12 and are some what reactive. transition metals
group 2 elements that have two valence electrons. alkaline-earth metals.
Created by: BrandonMarze
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