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WorksheetsStructure of Matter
Total questions: 23
Worksheet time: 12mins
Which of the following is true about how hydrogen and oxygen can combine to form molecules?
Hydrogen and oxygen can combine in many ways to form different molecules.
Two atoms of hydrogen are always required to bond with two atoms of oxygen.
When oxygen combines with hydrogen to make a molecule, water will always be produced.
Molecules composed of hydrogen and oxygen must have at least four atoms.
Which of the following best explains the relationship between molecules and atoms?
Atoms are molecules that have a charge.
Atoms have smaller parts, called molecules
Molecules are made up of two or more atoms.
Molecules are atoms that have no mass.
The extended structure of sodium chloride (NaCl) is shown.
Which of the following describes the configuration of Layer 4 of the sodium chloride crystal?
It will be identical in all of its characteristics to Layer 1.
It will contain 4 atoms of chlorine and 5 atoms of sodium.
It will have chlorine atoms in all four of its corners.
It will have sodium that are bonded only to other sodium atoms.
Above is a table describing the models made by four students. Which of the following is the most accurate evaluation of these models?
Only Students 1,2, and 4 created acceptable models, since molecules must be made of different types of atoms.
All of the students created acceptable models because molecules can consist of many different configurations of atoms.
Only Student 2 created an acceptable model of a molecule, since every molecule must have a balance of atoms.
All student models are acceptable except that of Student 4, since molecules cant be made of so high a number of atoms.
Graphite is a soft, dark material often used as a lubricant. Diamond is often a clear, hard crystal. Which of the following best explains the difference in these materials?
The arrangement of the atoms of each one.
The elements of which each one is made.
The number of atoms each one is made of.
The size and shape of the individual atoms.
How many atoms of Nitrogen are in a molecule of Caffeine, which has the molecular formula C8H10N4O2
8
10
4
2
How many carbon atoms are in the following:
2C6H12O6
12
2
6
24
The smallest particle of an element; made of electrons, protons, and neutrons
Molecule
Atom
Compound
Nucleus
A solid material whose atoms, molecules, or ions are arranged in an ordered pattern
Compound
Crystal
Repeating Subunit
Atom
Anything that has volume and mass
Liquid
Solid
Matter
Crystal
The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically
Molecule
Element
Atom
Nucleus
A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present
Coefficient
Molecular Formula
Subscript
Superscript
Negatively charged subatomic particle
Neutron
Proton
Electron
Quark
The number of ___________ determines the identity of an atom
Electrons
Neutrons
Protons
Orbits
Contributes mass, but no charge to an atom
Electrons
Neutrons
Protons
Nucleus
What is the chemical symbol shown in the box?
Zinc
30
Zn
65.38
What is the atomic mass shown in the box?
Zinc
30
Zn
65.38
What is the atomic number shown in the box?
Zinc
30
Zn
65.38
How many neutrons are in an atom of zinc?
65
30
35
95.38
How many protons are in an atom of zinc?
65
30
35
95.38
The molecular formula for Sulfuric acid is H2SO4. How many atoms are in one molecule?
3
6
7
8
The molecular formula for octane is C8H18. How many atoms of carbon are in 100 molecules of octane?
1800
2600
800
100
State of matter with a definite volume and an indefinite shape.
solid
liquid
gas
plasma
