Physical Science Grade 11 (PHSC-112) Weeks 1-10
AMA OED ANSWERChemical Reactions and Bonding
What do you call the solid formed when a liquid solution is allowed to stand still for a long amount of time?
What is the proper term for catalysts involved in biological processes?
What is the term for the energy responsible for the variations in the reaction rates of chemical processes?
What property of a material describes the compactness of the arrangement of its molecules?
Identify the kind of change wherein the product is the same as the reactants.
In which type of covalent bonding are the shared electrons shared congruently throughout the molecule?
What do you call the ability of a substance to chemically combine with other compounds?
The ______ property of a substance can be observed without changing the substance.
What type of covalent compound is there a slight difference in the electric charge between the opposite sides of the molecule?
What kind of chemical bond involves the sharing of electrons between two atoms?
What is the component of a chemical reaction that is present at its start?
Two different atoms may or may not have this type of covalent bonding.
_____ covalent bond does not have an equal sharing of electrons.
What kind of change results in the production of a material that is entirely different from the reactants?
This is another term used to refer to covalent compounds.
This refers to the speed of a chemical process.
Which atom is more positive than the other in a molecule of dihydrogen oxide?
These compounds are highly soluble in water.
These properties can be detected using your senses.
What type of compound is formed by the sharing of electrons?
Covalent bonding exists between two identical atoms.
This is the force that exists between the molecules of a compound.
What is the term for the property that makes it capable of being hammered into thin sheets?
In a water molecule, which atom is more frequented by the shared electrons?
Identify the substance that hastens chemical reactions.
In a ______ type of covalent bonding, there is equal sharing of electrons between the atoms.
What type of covalent bonding is characterized by the incongruent sharing of electrons between the atoms?
Which reaction rate factor is due to the amount of reacting substances?
This compound is formed by a cation and an anion.
Astronomy and Celestial Motion
Also known as the revolution of the Earth around the sun.
Ancient constellations related to Earth’s annual motion.
Center in Ptolemaic system of the universe.
Center of the universe in the Copernican system.
Earth’s movement that results in the observation of diurnal motion.
Event when the sun crosses the Celestial Equator.
Line on Earth that is parallel to apparent daily paths.
Main factor in the precession of equinoxes.
More common term for the annual motion of the Earth.
Type of observable motion associated with heavenly bodies.
Slow and continuous change in the orientation of an astronomical body’s rotational axis.
Identify the date of the year when the Earth is at its closest from the Sun.
Identify the shape of the planetary orbit based on Kepler’s third law.
Name the star blamed by the Greeks for the intensity of their summer.
This ancient device aligns with the North Star and is used to determine the precise time of its user’s location.
This model is the combination of two ancient models of the universe.
This structure was developed by the Mayans as they observed Venus.
What is the constant quantity in the universe model by Kepler?
What is the oldest heavenly body that has been observed and has preceded great events in history?
What property of a planet has this property directly proportional to the cube of the semi-major axis of its orbit?
Where is the Sun located with respect to a planet’s elliptical orbit?
Mechanics and Motion
Constant in the motion of a falling body in vacuum.
Description of the change in the rate of movement of a body.
Indirect force resulting from the application of a force.
Necessary component of motion according to Aristotle.
Property of a body that affects its state of motion.
Aside from changing the state of motion of a body, this is also an effect of applying an unbalanced force to the body.
Which can be easily affected by an unbalanced force: one cube of ice or one sack of rice?
This law implies the importance of balanced forces and what unbalanced forces are.
Which will accelerate more when the same unbalanced force is applied: pencil or cabinet?
This law of motion relates the rate of change in the movement of a body and the unbalanced force that it experiences.
Which law of motion states that a body will not change its current state of motion unless an unbalanced force acts upon it?
If you push the wall with an amount of force, you supply the action force. What is the source of the reaction force?
What factor of a body that is at rest prevents it from moving?
Which of these has a greater inertia: fly or cat?
Constant in a body as long as no net force acts upon it.
Decreases as acceleration increases in Newton’s law of acceleration.
Force involved in Newton’s Law of Universal Gravitation.
Statement based on repeated experimental observations.
Statement taken to be true since what it proposes is already evident.
According to Galileo, this quantity is not needed to keep a body in motion under ideal conditions.
Describe the total amount of energy of a body before it falls from a height and as it hits the ground.
In the law of acceleration, which quantity decreases as the acceleration decreases?
This is also known as the “inertia in motion” of a body.
What happens to energy as it is used up by different systems?
What happens to the magnitude of the gravitational force as the bodies become more massive?
What happens to the magnitude of the gravitational force as the distance between two bodies increases?
What term do you use to refer to the amount of material contained by a body?
Consider the formula for momentum. What quantity increases with the velocity of a body?
If a body has no momentum, what else does it not have?
In the formula for momentum, this quantity decreases as the body moves slower.
In this type of collision, this factor is not necessarily conserved.
This quantity describes how difficult it is to stop a moving body.
This quantity enables bodies to move so that they would collide.
What SI quantity is directly related and directly proportional to the mass of a body?
What type of collision is involved between two bodies that show a spark of light after colliding?
Which type of collision involves the constant sum of total kinetic energy before and after the collision?
Which will stop first when these two bodies collide: truck or bicycle?
Collision that involves the conversion of energy into other forms outside the colliding bodies.
Factor responsible for the movement of the bodies that are about to collide.
Quantity conserved in any collision.
Waves and Light
Consider the wave equation. Which quantity increases with the frequency of the wave?
In light, this is what the photons carry enabling them to move.
In the wave equation, this quantity is inversely proportional to the frequency of the wave.
Name the component of light that travels in straight lines.
This constant determines how much light will bend as it enters a different medium.
This phenomenon of light is the evidence of the energy possessed by light.
This wave is produced by the disturbance of the molecules nearby its source.
What is the optical device that is used to show the bouncing of light?
What kind of wave is light?
What kind of wave is represented by a sine wave?
Optical device that demonstrates bending of light.
Particle of light that carries its energy.
Path of light that makes it understood to be a particle.
Wave that can propagate even without molecules.
Wave that cannot exist in vacuum.
Bending of light around an edge causing umbra and penumbra in the shadow.
Deflection of light along its path.
Phenomenon of light wherein light waves add up.
Phenomenon of separation of light into different colors.
Type of mirror that shows an inverted image of you.
This phenomenon of light explains how light shows different colors after passing through a prism.
This type of mirror shows a virtual image of the object.
What do you call a displaced image of an object as the result of the bending of light rays?
What phenomenon of light is utilized to identify the wavelength of a given light ray?
Electromagnetism and Relativity
What exists between two charges in space?
According to Faraday, what is produced by a changing magnetic field?
What principle explains why it is impossible to determine experimentally both the position and the speed of an electron at the same time?
How do electron orbits look like as a consequence of the uncertainty principle?
What can electric current produce along a wire?
Hertz applied high voltage AC electricity across the central spark gap of the transmitter creating sparks.
What digital storage oscilloscope circuit compensates for high sampling rates of high frequency signals?
What test equipment combines the operation of many test instruments into a single compact unit?
When using forward error control as a method of error correction, where does error correction take place?
What part of the pulse code modulation (PCM) process converts a continuous time signal into a discrete time signal?
Hertz found that when sparks flew across the main gap, sparks also usually glow across the secondary gap that is between points A and B.
According to Hertz, he pictured waves of electric charge moving back and forth, creating a standing wave within the wire.
When reading the forward power on a wattmeter, what does two right-facing arrow heads mean?
What are the two main types of photodetectors?
In November 1886, Heinrich Hertz became the first person to transmit and receive controlled radio waves.
If the interference can be eliminated by disconnecting the receiving antenna, the source of the disturbance is most likely...
What initial nuclear radiation components generate electromagnetic pulses?
Who discovered radio waves?
What pattern simulator section of the bit error rate test set accepts a 48-bit parallel word and generates a serial pattern?
Hertz started generating radio waves using a piece of electrical equipment called an induction coil.
As measured in any inertial frame of reference, light is always propagated in empty space with a definite velocity that is independent of the state of motion of the emitting body.
Maxwell’s equations are not consistent with Galilean relativity unless one postulates the existence of a physical aether.
The laws of physics are the same in all inertial frames of reference.
The postulates of special relativity can be expressed very succinctly using the mathematical language of pseudo-Riemannian manifolds.
What is the correct expression for the amplitude of a vibrating mass?
Which of the following is not a term associated with periodic waves?
Which of the following sound waves can be heard by the human ear?
It combines special relativity with the equivalence principle.
It is the succession of methods by which astronomers determine the distances to celestial objects.
Known as the “dwarf planet”.
Vibrations...
Special relativity is a theory.
States that the net force acting on a body is equal to that body’s (inertial) mass multiplied by its acceleration.
According to this law, there is a universality of free fall. The trajectory of a test body in free fall depends only on its position and initial speed.
Which of the following must be satisfied for a vibration to be simple harmonic motion?
It is the passage of electromagnetic radiation through a medium.
This Kepler's law states that the line joining the planet to the sun sweeps out equal areas in equal times as it moves along its orbit.
Which of Newton's laws states that an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force?
Galileo looked at the Sun and found out that it had spots.
Mercury and Venus are never more than 200 and 450, respectively, from the Sun.
The Aristotelian view of the world made the certain basic assumption that the Earth is a sphere, fixed, and unmoving at the center of the universe.
Frequently Asked Questions
What is the difference between polar and nonpolar covalent bonding?
In polar covalent bonding, electrons are shared unequally between atoms, creating a slight charge difference (e.g., in water, oxygen attracts electrons more). Nonpolar covalent bonding involves equal sharing of electrons, typically between identical atoms, resulting in no charge difference (e.g., in diatomic molecules like O₂).
How do the Ptolemaic and Copernican models of the universe differ?
The Ptolemaic model is Earth-centered, with celestial bodies orbiting Earth in complex paths. The Copernican model is Sun-centered, proposing that planets, including Earth, orbit the Sun in simpler, elliptical paths, as later refined by Kepler.
What are Newton’s laws of motion?
Newton’s First Law (Inertia) states an object remains at rest or in constant motion unless acted upon by a force. The Second Law (Acceleration) relates force to mass and acceleration (F=ma). The Third Law (Interaction) states that for every action, there is an equal and opposite reaction.
What is the significance of Kepler’s laws in astronomy?
Kepler’s laws describe planetary motion: the First Law states orbits are ellipses with the Sun at one focus; the Second Law says planets sweep equal areas in equal times; the Third Law relates orbital period to the cube of the semi-major axis, enabling precise predictions of planetary motion.
How do transverse and longitudinal waves differ?
Transverse waves, like light, have particle motion perpendicular to the wave direction and can propagate in a vacuum. Longitudinal waves, like sound, have particle motion parallel to the wave direction and require a medium, unable to exist in a vacuum.