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WorksheetsScience 8: Quarter 3
Total questions: 45
Worksheet time: 28mins
How can sublimation be utilized in forensic investigations?
In which specialized application is deposition predominantly employed?
What is the process called when a liquid changes into a solid?
Evaporation
Freezing
Sublimation
Condensation
Which scientist developed the atomic theory?
Lavoisier
Thomson
Dalton
Bohr
Which state of matter has particles that are far apart and move rapidly in all directions?
Solid
Liquid
Gas
Plasma
Which refers to anything that has mass and occupies space?
Particle
Atom
Molecule
Matter
What do you call the building of a matter?
Atom
Neutron
Proton
Electron
What is the term for the process when a gas changes into a liquid?
Sublimation
Melting
Condensation
Deposition
Why do paper towels absorb water?
Paper towels absorb water because they have tiny holes and spaces that catch water molecules.
Paper towels absorb water because they are made of a material that naturally attracts water.
Paper towels absorb water because they release chemicals that make water molecules stick to them.
Paper towels absorb water because they have a smooth surface that repels water molecules.
What distinguishes plasma from the other three states of matter (solid, liquid, and gas)?
Plasma consists of positively charged particles only.
Plasma is the only state of matter that does not have a definite shape or volume.
Plasma is composed of ions and free electrons, making it electrically conductive.
Plasma is denser than solids but less dense than liquids.
Who arranged the periodic table by increasing atomic number?
A) Dmitri Mendeleev
B) John Newlands
C) Glenn T. Seaborg
D) Henry Moseley
Which state of matter has particles that are closely packed together and can only vibrate in place?
Solid
Liquid
Gas
Plasma
Who first proposed that matter is composed of tiny, indivisible particles?
Aristotle
Democritus
Dalton
Rutherford
How does one subatomic particle differ from the others?
A) Protons have a positive charge, while electrons have a negative charge, and neutrons have no charge.
B) Protons have a negative charge, while electrons have a positive charge, and neutrons have no charge.
C) Protons have no charge, while electrons have a positive charge, and neutrons have a negative charge.
D) Protons have a positive charge, while electrons have a negative charge, and neutrons have a positive charge.
Who plotted the atomic weights of elements on paper tape and wound them, spiral-like, around a cylinder?
A) John Newlands
B) Dmitri Mendeleev
C) Alexandre-Emile Béguyer de Chancourtois
D) Niels Bohr
Which of the following properties of solids are CORRECT?
Has volume, pressure, and temperature.
Has fluidity, viscosity, and surface tension.
Dense, crystalline solids, and metallic.
Amorphous solids, viscose and have high volume.
Why is tracking a tropical cyclone important?
A) To determine its category based on wind speed.
B) To anticipate potential evacuation needs for coastal areas.
C) To analyze its impact on local wildlife and ecosystems.
D) To assess its potential for causing earthquakes in the region.
Which scientist proposed the planetary model of the atom, where electrons orbit the nucleus in fixed, circular paths?
Ernest Rutherford
Niels Bohr
J.J. Thomson
John Dalton
Who arranged the elements in order of atomic weight, proposing the law of octaves?
A) John Newlands
B) Dmitri Mendeleev
C) Alexandre-Emile Béguyer de Chancourtois
D) Niels Bohr
At what temperature does water freeze and change into ice?
100°C
0°C
-100°C
50°C
How does the electron configuration mnemonic help in arranging the atom's electrons?
A) It helps scientists predict the properties of elements.
B) It allows scientists to visualize electron arrangement.
C) It simplifies determining the number of electrons in each orbital.
D) It enables scientists to calculate the mass and charge of an atom.
Which advanced application of element lithium finds significant use in modern technology?
A) Lithium-ion batteries powering electric vehicles.
B) Lithium-based medications for neurological disorders.
C) Lithium compounds used in advanced ceramics for aerospace applications.
D) Lithium grease employed in precision machinery in extreme environments.
Who invented the chemical symbol?
A) Berzellius
B) Dobereiner
C) Lavoisier
D) Mendeleev
How was Rutherford able to discover the nucleus of an atom?
A) By conducting experiments with cathode rays and observing their deflection in electric and magnetic fields.
B) By studying the photoelectric effect and determining the quantized nature of light.
C) By bombarding a thin gold foil with alpha particles and observing the scattering pattern.
D) By measuring the charge-to-mass ratio of electrons using a cathode ray tube.
In which scenario does sublimation occur?
Ice melting into water
Dry ice disappearing into a gas
Water evaporating from a lake
Water freezing into ice
Which property of a gas explains why it is compressible?
Gases have no definite shape
Gases have low density
Gases have high viscosity
Gases have particles that are far apart and move rapidly
What process leads to the formation of dew on grass in the morning?
Melting
Sublimation
Evaporation
Condensation
What atomic model is often compared to a 'raisin bun' with positive charges (plums) embedded in a sphere of negative charges (bun)?
Rutherford model
Thomson model
Bohr model
Dalton model
Imagine you have a balloon filled with air, and you place it outside under the sun for a few hours. What do you think will happen to the balloon, and why?
The balloon will get smaller because sunlight makes things shrink.
The balloon will stay the same size because sunlight doesn't affect balloons.
The balloon will get bigger because sunlight heats up the air inside, causing it to expand.
The balloon will pop because sunlight makes things explode.
How does the use of fire in sky lanterns contribute to their floating in the air?
By providing light to illuminate the lantern, making it visible in the dark sky.
By heating the air inside the lantern, causing it to become less dense and creating a buoyant force that lifts the lantern upward.
By producing smoke that adds to the overall weight of the lantern, aiding in its descent back to the ground.
By melting the paper or fabric of the lantern, causing it to disintegrate and fall to the ground.
What was Dmitri Mendeleev's greatest contribution to the history of the periodic table?
A) He arranged all the known elements by their atomic number
B) He realized that there was a pattern of reactivity which repeated every 8 elements
C) He predicted the existence (and properties) of new elements
D) He identified the 'law of triads' which became the groups
Electron configuration refers to the distribution of electrons among the various atomic orbitals within an atom. Which of the following is the CORRECT electron configuration of element neon (Ne) then?
A) 1s² 2s² 2p⁶
B) 1s² 2s¹
C) 1s² 2s² 2p³
D) 1s² 2s² 2p⁶
Which of the following matters undergo deposition process?
Ice cream melting
Dry ice sublimating
Water boiling
Frost forming on a window
Considering the viscosity of water, oil, gasoline, and honey, which statement is most accurate?
Water flows faster than oil, gasoline, and honey because it's thicker.
Oil and gasoline flow easily, so they have low viscosity compared to water and honey.
Gasoline pours easily, making it less viscous than water, oil, and honey.
Honey flows very slowly and offers the most resistance to motion compared to water, oil, and gasoline.
Which statement is INCORRECT about the fundamental components of an atom?
The number of protons in an atom is called the atomic number.
The number of electrons, protons, and atomic number in an atom of the same element are all the same.
The mass number is the sum of protons and neutrons in an atom.
The mass number of an atom is the sum of protons, neutrons, and electrons.
Is it possible for a solid substance to directly change into the gas phase?
Yes, through the process of sublimation.
No, solid substances can only change into liquids before transitioning to gases.
Yes, but only under extremely high pressures.
No, solid substances can only change into liquids through melting, followed by vaporization.
Which property of a liquid explains why it can flow?
Liquids have a definite shape
Liquids have a fixed volume
Liquids have particles that are closely packed together
Liquids have particles that can move past one another
In an atom of magnesium 2412Mg, what is the number of neutrons?
A) 19
B) 24
C) 12
D) 10
Which of the following sequences correctly arranges the given elements in decreasing order of atomic radius?
A) Na > P > Cl > Al > Si
B) Cl > Al > Si > Na > P
C) P > Na > Si > Cl > Al
D) Al > Si > P > Cl > Na
What are the fundamental components of an atom?
A) The number of protons in an atom is called the atomic number.
B) The number of electrons, protons, and atomic number in an atom of the same element are all the same.
C) The mass number is the sum of protons and neutrons in an atom.
D) The mass number of an atom is the sum of protons, neutrons, and electrons.
How crucial is the water cycle in sustaining the water balance within ecosystems?
It is insignificant; ecosystems primarily rely on precipitation for water supply.
It plays a minor role; groundwater reservoirs serve as the primary water source for ecosystems.
It is moderately important; while rainfall contributes, groundwater recharge is the main mechanism for water balance.
It is essential; the continuous movement of water through evaporation, condensation, and precipitation ensures the availability of water for plant growth and animal habitats.
What will be the mass number of an atom if it has 5 electrons, 5 protons, and 6 neutrons?
A) 5
B) 10
C) 11
D) 16
Which of the following electron configurations is NOT POSSIBLE for an atom?
A) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹
B) 1s² 2s² 2p⁴ 3s²
C) 1s² 2s² 2p⁶ 3s² 3p⁶
Which of the following sequences correctly arranges the given elements in increasing order of electron affinity?
A) Na < P < Cl < Al < Si
B) Al < Si < P < Cl < Na
C) Si < Al < Na < P < Cl
D) Cl < P < Si < Al < Na
Which statement is most accurate about Kinetic Molecular Theory?
According to the theory, gas particles move randomly and collide with each other and the walls of the container, resulting in pressure exerted by the gas.
The theory suggests that as the temperature of a gas decreases, the average speed of its particles decreases as well.
Gas particles are attracted to each other, forming solid structures, as proposed by the theory.
The theory states that gas particles have a significant volume compared to the volume of the container they occupy.
