Science Crossword Puzzles

the tube connecting the mouth & nose to the lungs, bigger tubes that carry air in and out of the lungs, smaller tubes that carry air to the …

the smallest particle of an element that retains all the properties of that element, a chemical combination of two or more different elements, forms …

can be found in natural gas deposits, used in advertisement signs, chemical symbol is ar, found in earth's atmosphere and some meteorites, name …

bonding where valence e- are delocalized, sharing of 2 e- between 2 nonmentals, covalent molecule with uneven distribution of valence e-, elements …

a thermodynamic quantity equivalent to the total heat content of a system, the speed at which a chemical reaction takes place, defined as proportional …

vital plant process that converts carbon dioxide and water into chemical energy and takes place in the chloroplasts, reverse of photosynthesis. a …

device used to measure heat changes in chemical reactions, energy change at constant pressure; symbolized by δh, reaction that releases heat to the …

what group are the alkaline earth metals in?, element found in fireworks, element used to extract oil and gas, element that can be found in ore mine, …

a soft, silvery-white metal that is highly reactive and is often stored under oil to prevent it from reacting with air (9), a radioactive element that …

leaves, flowers, cones, and secondary stems grow at these points where a bud of meristem tissue divide and specialize to form these particular …

the idea that all living organisms are descended from a single ancestor or a small group of ancestors, the process through which species change over …

something that does not easily allow the transfer of heat or electricity, the standard measurement of energy, the amount of energy required to raise …

a radiation absorbed dose, combining two smaller helium nuclei to get energy, the number of protons in an atom, atoms of the same element with a …

the tiniest possible unit of an element, has no charge, holds protons together in the nucleus, an object that attracts iron, nickel, and cobalt, a …

heterotroph; depends on primary producers for energy, autotroph; converts sunlight and chemical energy into energy used by the rest of food chain, the …

comes from things like the sun, light bulbs and candles. it bounces off of things and allows us to see, curved mirrors that allow us to see a wider …

the distance between two identical points on a wave, a smooth surface that reflects light to form images, a line that indicates the path of light, …

a large evergreen tropical tree that grows edible fruit. planted in the spring and in the fall it produces showy green leaves that have a yellow-green …

when the plant or plant products are used by humans, when humans use the animal and animal products that feed on plants and plant products, plants …

the reproductive part of the plant, part of the cell where sunlight is used to make sugars for the plant, tube like structure that supports the stigma …

do polar molecules attract each other?, electrons that play a part in the formation of chemical bonds are known as?, what bond is an attraction …

this loop of _ is comprised of the descending and ascending limbs. bonus: also called the _ loop, precursor to urine, t/f: it is common to have …

the time when the sun first appears in the sky, the space above the earth that you can see when you look up, the round object that moves around the …

a polysaccharide stored in the liver and muscle cells, a long molecule consisting of many similar building blocks, called monomers, a pure substance …

the state of matter in which atoms move around one another, when thermal energy is added or removed, this is what happens to a substance's state, …

a negatively charged ion, reflects the relative strength of the forces holding ions together in a solid ionic compound, a chemical compound formed …

the scientific study of prehistoric life forms through the examination of plant and animal fossils, the preserved remains or traces of ancient …

first planet found by the telescope, the densest planet, earths only proper natural satellite, shortest day, named after the roman god of war, …

the total number of changes required for all characters on the tree, a structure inherited from an ancestor that no longer serves a clear function in …

hcl(aq), _ acid, nh3, a group of atoms held together by covalent bond, clo-, so4, n3-, name of a constant = 6.02x10^23, substance being formed in a …