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Phy Sc C 5

Stack #171756

QuestionAnswer
A mixture is different from a compound because each substance in a mixture retains its own properties
Each molecule of hydrocholoric acid, HCL contains one atom of hydrogen and one atom of chlorine.
In which substance do the molecules have the strongest attraction to one another? sugar, a solid
Often atoms join so that each atom will have an outermost energy level that is full of electrons
In a metallic bond, the nucleus of one atom is attracted by the nearby atom's electrons
Solid ionic compounds have very high melting points because they contain charged ions that are locked tightly together.
The name for the compound with the formula CuBr2 would be written as copper(II) bromide.
Formaldehyde, CH2O, and acetic acit, C2H4O2, have the same empirical formula but different molecular formulas
Polymers are large organic molecules that are made of repeating units
The forces that hold different atoms or ions together are chemical bonds
Each molecule of table sugar, C12H22O11, contains 12 atoms of carbon
Gases take up a lot of space because gas molecules are not attracted to one another
Covalent bonds are fromed between nonmetal atoms
Copper is a good conductor of electricity because its electrons can move from atom to atom
The name dinitrogen tetroxide tells you that this compound contains two N atoms and four O atoms
When copper combines with oxygen fo form copper(II) oxide, the charge of the copper ion is Cu2+
It is possible for different covalent compounds to have the same empirical formula because empirical formulas represent a ratio of atoms in the compound
How many chemical bonds can carbon form with other atoms? 4
Which of the following is a compound? salt, soup, paint, air salt
One molecule fo SiO2 contains the following combination of atoms: 1 Si and 2 O
There are strong bonds between the atoms in a piece of quartz. The bonds give the quartz a high melting point
The attraction between molecules tends to be __________ the attraction between ions weaker than
Which molecules are most strongly attracted to one another? water molecules
Sugar has a lower melting point than salt because sugar is made of molecules
Which of the following is a mixture? soil, oxygen, pure water, sugar soil
A chemical formula shows numbers and types of atoms
Atoms sometimes form bonds to become more stable
Copper atoms are held together by _________ bonds. metallic
Oxygen atoms have six electrons in their outer shells. When two oxygen atoms bond they will form a __________ bond by _________ their electrons. covalent, sharing
An ionic compound of calcium and chlorine would be named calcium chloride
A covalent compound made of one sulfur and two oxygen atoms would be named sulfur dioxide
The covalent compound N2O5 would be named dinitrogen pentoxide
The ____________ furmula of a compound is written in the simplest whole number ratio of atoms empirical
The formula C6H12O6 would be the ____________ formula for glucose chemical & molecular
All organic compounds must contain the element carbon
The atoms in organic molecules are held together by _____________ bonds. covalent
A chemical formula with the pattern CnH2n+2 must represent a(n) alkane
An alcohol must contain a(n) OH group
The polymer _____________ determines your genetic makeup. DNA
Created by: stephensfamily
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