Chemistry
The type of change that happens when chemical bonds break and new bonds form
What is a chemical change?
A chemical reaction that releases heat is known as this
What is an exothermic reaction?
The type of plate boundary where the sea-floor spreading occurs
What is divergent?
Matter is neither created nor destroyed
What is the law of conservation of matter?
The element that comprises most of the mass of the sun
What is hydrogen?
The most abundant metalloid in Earth's crust
What is silicon?
The SI unit for force
What is Newton?
The organelle where cellular respiration takes place
What is the mitochondria?
A uniform mixture that involves a solute dissolving in a solvent
What is a homogeneous mixture or solution?
Principle where the youngest rocks are at the top of the sequence and the oldest are at the bottom.
What is the law of superposition?
The only sure evidence for a chemical reaction
What is a new substance?
A liquid will become this state of matter if the particles gain kinetic energy
What is a gas?
Genetic variations among individuals in a population give some an advantage in surviving and reproducing in their environment.
What is Natural Selection?
What is made when atoms of different elements combine together
What is a compound?
The past and current movements of the Earth's crust provides an understanding of its geological history
What is Plate Tectonics?
The substances listed on the left side of a chemical equation
What are the reactants?
Earth's atmosphere is composed of about 78 percent of this element
What is nitrogen?
Gasses that absorb infrared radiation emitted from Earth’s surface and reradiating it back to Earth’s surface
What are greenhouse gasses?
The chemical reaction between sodium (na) and Chlorine (Cl) forms this
What is NaCl or salt?
The loss of about 3/4 of all species in existence across the entire Earth over a “short” geological period of time.
What is a mass extinction?
Element group that are shiny, malleable, ductile, and good conductors
What are the metals?
The longest wavelength in the electromagnetic spectrum
What are radio waves?
A repeating pattern with a specific length, frequency, and amplitude
What is a simple wave?
An element's position in the periodic table is based on this
What are the number of protons in the nucleus?
The 4 subsystems (rock, water, gases, life) that make up the planet Earth.
What is the geosphere, hydrosphere, atmosphere, and biosphere.