Chemistry
What type of bond involves the transfer of electrons from one atom to another, resulting in the formation of charged ions?
Ionic bond
What unit is used to measure electric current?
Amperes (A)
The largest organ in the human body, responsible for protection, temperature regulation, and sensation.
The skin
This Italian physicist is renowned for his work in the field of electromagnetism and is best known for formulating the laws of electricity and magnetism. He is also credited with inventing the first practical electric battery. Who is he?
Alessandro Volta
What is the name of the point at which an object is balanced?
Center of gravity
What factors can affect the rate of a chemical reaction? Name at least three.
Temperature, concentration, surface area, and the presence of catalysts
What are the two poles of a magnet called?
North Pole and South Pole
These structures control the movement of substances in and out of the cell.
Cell membrane
This English scientist is famous for developing the laws of heredity through his work with pea plants, which laid the foundation for the field of genetics. His research led to the establishment of the basic principles of inheritance. Who is he?
Gregor Mendel
What is the SI unit of electric current?
Ampere
Which gas is produced when an acid reacts with a metal?
hydrogen gas
What is the formula to calculate speed?
Speed = Distance ÷ Time
The term for animals that eat only plants.
Herbivores
This American inventor is known for developing the phonograph, the motion picture camera, and the electric light bulb. He held over 1,000 patents and is often called the "Wizard of Menlo Park." Who is he?
Thomas Edison
What is the chemical formula for Sulfuric acid?
H2SO4
Which element is known for being a noble gas and is used in neon lights?
neon (Ne)
What is the formula for calculating force?
Force = Mass × Acceleration (F = ma)
The powerhouses of the cell, where respiration takes place to release energy.
Mitochondria
This Russian chemist is famous for creating the periodic table of elements, arranging them by atomic number and properties. His work helped to organize chemical knowledge and is still used today. Who is he?
Dmitri Mendeleev
What is the chemical formula of dry ice?
CO2
In the context of chemical reactions, what is the term for the energy needed to start a reaction?
activation energy
What is the process of heat transfer through direct contact called?
Conduction
A type of microorganism that can be helpful in making antibiotics or food products like yogurt.
Bacteria
This Greek philosopher and scientist is often referred to as the "Father of Medicine." He established a code of ethics for physicians, which is still referenced today, and emphasized observation and documentation in the study of medicine. Who is he?
Hippocrates
Which layer of Earth's atmosphere contains the ozone layer?
Stratosphere
In the reaction 2H₂ + O₂ → 2H₂O, how many moles of water are produced from 4 moles of hydrogen gas?
4 moles of water
What happens to light when it passes from air into water?
It slows down and bends, a process called refraction.
The organ where a baby develops during pregnancy.
Uterus
This physicist is known for his contributions to the understanding of atomic structure and quantum theory. He proposed the idea of quantized energy levels for electrons in atoms, which is fundamental to modern chemistry and physics. Who is he?
Niels Bohr
What type of product is used to replace disposable plastic utensils in eco-friendly dining?
Wooden utensils
Which colorless, odorless gas is produced during respiration and is also a product of combustion?
carbon dioxide (CO₂)
What is the difference between transverse and longitudinal waves?
In transverse waves, the particles move perpendicular to the direction of the wave, while in longitudinal waves, the particles move parallel to the direction of the wave.
The gradual change in species over long periods of time is called this.
Evolution
This English naturalist is best known for his work on the classification of living organisms and the development of a system of naming species called binomial nomenclature. He is often called the "father of modern taxonomy." Who is he?
Carl Linnaeus
What is the basic unit of heredity?
Gene
In an exothermic reaction, what happens to the temperature of the surroundings?
The temperature of the surroundings increases as heat is released.
Name two types of potential energy.
Gravitational potential energy and elastic potential energy.
The process by which cells divide to form two identical daughter cells.
Mitosis
Who developed the theory of evolution by natural selection and authored the book "On the Origin of Species"?
Charles Darwin
What is the hardest natural substance on Earth?
Diamond