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WorksheetsGEN CHEM
Total questions: 149
Worksheet time: 2hrs 30mins
It is essential in understanding the properties of matter in different states. It also explains the behavior of matter and the motion of particles.
(a)
The different characteristics of the states of matter is only dependent on the motion of their molecules.
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It is the arrangement of particles in the solid.
(a)
It is a group of solids with long continuous pattern. It is arranged in a regular repeating three dimensional structure called a crystal lattice.
(a)
It is a group of solids with no pattern. It is an agregate with no particular long range order.
(a)
The structures of crystalline solids are built from repeating units called (a) .
The model of metallic bonding is called the " (a) " model.
The atoms of these crystals readily lose electrons to form positive ions.
(a)
What do you call a positive ion?
(a)
What do you call a negative ion?
(a)
The ordered arrangement of the units of Amorphous solids maximizes the space they occupy and are essentially incompressible. Some examples of amorphous solids are glass, plastic, coal, and rubber.
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The molecules of rubber are arranged in a random manner. Diamond and graphite contains fixed geometric patterns or lattices.
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Crystalline solids soften gradually when they are heated. Amorphous solids have a sharp melting point.
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This is a point where crystals become liquids at a specific temperature.
(a)
It is where electrostatic interactions between the cations and delocalized electron hold the crystal together.
(a)
These are crystals that are made of ions (both cations and anions).
(a)
An ionic crystal has strong electrostatic interactions to hold the crystal lattice together.
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The energy needed to break an ionic crystal will depend on (a) of charges on the ions and the sizes of the ions.
These crystals are noble gases or neutral molecules. It is a result of a mix of hydrogen bonding / dipole-dipole and dispersion forces.
(a)
What is the hardest material known?
(a)
What is the second-hardest known material?
(a)
It is a crystal where each atom is covalently bonded to its nearest neighbors.
(a)
Which is an example of Molecular crystal?
C₁₂H₂₂O₁₁
MgO
copper
BN
Which is an example of an Ionic crystal?
C₁₂H₂₂O₁₁
NaCl
gold
CO₂
Solid has a fixed volume and fixed shape. Liquid and gas assumes the shape of the container.
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Intra means between 2 molecules. Inter means inside the molecule.
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The lesser electronegativity of an atom, the lesser is its partial negative charge when bonded to another atom with lower electronegativity.
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What do you call the energy in motion where particles are constantly in motion?
(a)
(a) is related to the amount of energy in a substance.
The (a) depends on the amount of space between the particles of a substance.
These are the attractive forces in between particles. As the particles get closer, the strength of these forces increases.
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These type of molecules are arranged tightly together and cannot move around. Their structure depend on the types of bonds that hold the atoms in place.
(a)
These molecules are close together but not bound in a fixed position and move rapidly as molecules slide against each other.
(a)
The surface of a liquid is usually (a) due to the pull of gravity.
The forces of attraction where chemical bonds occur (ionic, covalent, metallic).
(a)
It is a force of attraction where there is an attractive force between particles (atoms, molecules, and ions). It plays a role in determining the properties of substances.
(a)
In biology, water molecules stick together due to this kind of bond.
(a)
Oil and water don't mix because oil molecules are nonpolar and interact via (a) forces, while water molecules are polar and interact through hydrogen bonding.
In biology, proteins can fold into specific shapes between nonpolar amino acids due to this type of bond.
(a)
In biology, cell membranes are stabilized among lipid molecules by which type of forces? This forces helps to maintain the integrity of the membrane
(a)
He introduced the concepts of molecular volume and molecular attraction. He is one of the first scientists to have postulated intermolecular force
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There are only two types of intermolecular forces of attraction: Dipole-Dipole forces and Dispersion Forces.
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Dispersion Forces is also known as London Dispersion Forces.
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These forces are weak attractive forces that are present between ALL TYPES of molecules.
(a)
In dispersion forces, the influence of this attractive force is more obvious in which type of molecules?
(a)
It is the acquisition of impermanent polarity by nonpolar molecules due to the movement of electrons..
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It is a a nonpolar molecule that has impermanent polarity.
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It is an impermanent polarity of atoms or molecules due to the movement of electrons (on/off polarity). It may also distort the electron cloud of a neighboring atom or molecule thereby producing an induced dipol.
(a)
Instantaneous dipole may also distort the electron cloud of a neighboring atom or molecule thereby producing an (a) .
This type of ion forms an attractive force with the partially negative end of the molecule.
(a)
This type of ion forms an attractive force with the partially positive end of the molecule.
(a)
It is the impermanent polarity of atoms or molecules due to the movement of electrons (on/off polarity).
(a)
These forces of attraction are relatively weak and only become significant when molecules are close to each other. The magnitude of attraction resulting from these forces is directly proportional to the atomic mass of an atom or molecule
(a)
These are attractive forces between polar molecules. It occurs when a partially positive part of a molecule interacts with a partially negative part of a nearby molecule
(a)
Dipole-Dipole Forces is also known as?
(a)
(1) Dipole-Dipole Forces occur in partially charged ions found in nonpolar covalent bond molecules.
(2) Dipole-Dipole Forces is the weakest intermolecular forces of attraction.
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It is the tendency of an atom to attract electrons towards itself during the formation of chemical bonds.
(a)
Stronger force between liquid molecules means there is lesser force needed to break the interaction between the molecules to turn them into the vapor phase.
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When electrons are not shared equally in a chemical bond or in a molecule, a combination of charge occurs.
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It is determined by the geometry and distribution of charge in a molecule.
(a)
It explains how a molecule forms a regular geometric shape in order to minimize the repulsion and maximize the distance between lone pairs in a molecule.
(a)
If the atoms in the molecule are symmetrical, the charges are balanced by each other. The molecules are considered to be (a)
If the atoms in the molecule are asymmetrical, the charges are not balanced by each other. The molecules are considered to be (a)
It is special type of dipole-dipole interaction. It occurs among polar covalent molecules that have covalently bonded H to any one of the three highly electronegative elements: F, O, N.
(a)
This occurs when an ion is attracted to a polar molecule. This interaction usually happens in solutions where an ionic compound is dissolved in a polar solvent.
(a)
Having weak IMFs means there is a greater distance between particles. Gases have stronger IMFs than solid and liquid particles.
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This occurs due to the force of attraction between the molecules of a liquid. It is where the molecules inside are pulled in all directions.
(a)
In surface tension, when you consider a molecule inside and another molecule on the surface of a liquid, each molecule will experience different amount of forces.
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Surface tension is directly proportional to temperature.
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It is the tendency of a liquid to rise in narrow tubes or be drawn into small openings such as those between grains of a rock. It is also a result of intermolecular attraction between the liquid and solid materials.
(a)
It is the intermolecular attraction between like molecules (the liquid molecules).
(a)
It is an attraction between unlike molecules (such as those in water and in the particles that make up the glass tube).
(a)
When the cohesive forces between the liquid molecules are greater than the adhesive forces between the liquid and the walls of the container, the surface of the liquid is (a) .
When the cohesive forces between the liquid molecules are lesser than the adhesive forces between the liquid and the walls of the container, the surface of the liquid is (a) .
When both adhesive and cohesive forces are equal, the surface is vertical.
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It is resistance of a liquid to flow as liquid molecules slide past each other the thickness of a liquid.
(a)
A strong IMF within a liquid makes it more viscous.
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Viscosity is indirectly proportional to temperature.
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It is the process of changing liquid to vapor.
(a)
It is the process of converting vapor to liquid.
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The greater the number of gaseous particles, the greater the pressure exerted by the gas..
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When the rate of condensation of the gas becomes equal to the rate of evaporation of the liquid, the gas in the container is said to be in (a) with the liquid.
It is the pressure exerted by the gas in equilibrium with a liquid in a closed container at a given temperature.
(a)
It is the energy required to vaporize 1 mole of a liquid at a given temperature.
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In Molar Heat of Vaporization, it means heat content at a given standard condition. Its usual symbol is H.
(a)
It is the temperature at which the vapor pressure of a liquid is equal to the external pressure.
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At what temperature does water boil at 1 atm? (in Celsius)
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It is the temperature at which the liquid converts to a gas when the external pressure is 1 atm.
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The molar heat of vaporization is directly proportional to the boiling point.
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He invented the word “herbarium”, a collection of preserved plant specimens and data.
(a)
He introduced the concepts of molecular volume and molecular attraction.
(a)
Occurs among polar covalent molecules that have covalent bonded H to any one of the three highly electronegative elements.
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It is the state of matter that has weak Intermolecular Forces
(a)
What theory explains the behavior of gases, describing them as composed of tiny particles in constant random motion?
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It is the strongest intermolecular forces of attraction.
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What type of solid lacks a crystalline structure, with particles arranged randomly, examples include glass and rubber?
(a)
What physical property of liquids causes them to behave as if they have an "elastic skin" at their surface, resulting from intermolecular forces?
(a)
What type of intermolecular force arises from temporary dipoles in nonpolar molecules?
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What phenomenon occurs when a liquid rises in a narrow tube or channel without the need for pressure, due to adhesive and cohesive forces?
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What type of equation combines a balanced chemical reaction with the energy change?
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It is the impermanent polarity of atoms or molecules due to the movement of electrons.
(a)
It refers to a attraction between unlike molecules.
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It is a movement of the particles from an area of high concentration to an are of low concentration.
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It refers to the amount of solute that is being dissolved in the solvent, can be dilluted and concentrated.
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The tiny opening pores in the plant tissue.
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This term refers to the kind of mixture in which the uniform distribution of one substance within other results in no visible boundaries between the components.
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Known as the medium responsible for dispersing another substance, this component predominantly determines whether dissolution will occur.
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This refers to the component of a solution that becomes uniformly distributed within the dispersing medium and loses its distinct physical form.
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This property describes the maximum quantity of a substance that can enter a stable homogeneous mixture with a fixed amount of solvent under given conditions.
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This phenomenon takes place only when the forces established between solvent and solute particles overcome the original attractions holding together both solvent molecules and solute particles.
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Identified as a substance that alters the rate of a chemical reaction, this agent does so without undergoing permanent change itself by the end of the process.
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This theoretical model asserts that successful chemical change demands not only sufficiently energetic particle collisions but also precise molecular orientation during those collisions.
(a)
It is an intermolecular force in biology, wherein proteins fold into specific shapes due to hydrophobic interactions between nonpolar amino acids, which cluster together to reduce contact with water.
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It is the amount of energy added or removed from a system, represented with Q or q.
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It is the measure of how well a substance stores heat.
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A type of chemical reaction where in heat or energy is released to the surroundings.
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It is an imperical method of determining the change in enthalpy.
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It is the process of food production that happens to plants or autotrophs.
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This occurs when matter changes from one state to another.
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It is the energy an object holds due to its motion.
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It is where a specific temperature and pressure at which the three states of matter solid, liquid, and gas of that substance exist in thermodynamics equilibrium.
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Is the transfer of thermal energy between objects or systems due to a temperature difference.
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Is a thermodynamics property that represents the total heat content of a system.
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Occurs when matter changes from one state to the next
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Is the physical process where a substance transitions directly from the gas state without passing through the intermediate liquid state.
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It is where the specific temperature and pressure above which the distinction between liquid and vapor phases disappears.
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A graphical illustration which shows the different phases of a substance depending on the pressure and temperature.
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It is a property of materials that tells us how much heat energy is needed to change the temperature of a unit mass of the substance by 1°C or kelvin.
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It is the difference in enthalpy between the products and reactants of a chemical reaction.
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It is the tendency of an atom to attract electrons towards itself during the formation of chemical bonds.
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It is determined by the geometry and distribution of charge in molecules.
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It plays a role in determining the properties of substances
(a)
It explains the behavior of matter and the motion of particles.
(a)
It is held closer by one or two or more types of attractive force, also it has no definite shape and follows the shape of the container.
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It is a strong electrostatic attraction between two oppositely charged ions, a positively charged cation and a negatively charged anion
(a)
It is the attractive forces that hold atoms together within a molecule, acting as the chemical bonds that form the molecule's structure.
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It is one of the Intermolecular Forces in Biolog and it is called cohesion, a property arising from the hydrogen bonds formed between polar water molecules.
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It is the measure of how much a substance's volume can be reduced under pressure.
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It is the unequal sharing of electrons between two atoms in a covalent bond, resulting in a partial positive charge on one atom and a partial negative charge on the other, due to differences in their electronegativities.
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Which property of liquids explains their ability to move upward in narrow tubes or be drawn into small spaces, such as between grains of rock?
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The solid with ordered arrangements of units that maximize the space they occupy and are essentially incompressible.
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The solid is considered a “super-cooled liquid” where molecules are arranged randomly, similar to the liquid state.
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This model of metallic bonding is called the (a)
This property of metals results from atoms being tightly packed close together.
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Metals possess this property because strong attractive forces keep atoms bound in a crystal lattice.
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The ability of metals to allow charged particles to flow through the crystal lattice.
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This property of metals occurs because particles can easily transfer energy throughout the crystal.
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Metals exhibit this property because they readily absorb light and re-emit it, giving them a shiny appearance.
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A student notices that when she heats a certain solid, the heat does not spread quickly throughout the material. This is because no particles can move easily within the crystal, and any attempt to shift the particles breaks the attractive forces holding them together.
(a)
