Conjunctions

3. The compound did not react with water, nor did it dissolve when heated.
5. Photosynthesis produces oxygen, _____ cellular respiration consumes it.
7. ______ absolute zero is theoretically impossible to reach, scientists have come within a fraction of a degree of it.
8. The temperature of the gas increased, ____the pressure inside the container rose accordingly.
9. ____ an object is submerged in a fluid, it experiences an upward buoyant force equal to the weight of the fluid displaced.
10. Mitochondria are known as the powerhouses of the cell ______ they generate most of the cell's supply of adenosine triphosphate.
13. The experiment was successful, ___ the results contradicted the original hypothesis.
14. An atom is legally neutral ______the number of protons equals the number of electrons.
15. Gravity pulls objects toward the center of the Earth, ____ inertia keeps planets orbiting the Sun.

1. _____ an external force acts upon an object, it will remain at rest or move at a constant velocity.
2. Water can exist as a solid, a liquid, ____ a gas depending on the temperature and pressure.
4. Enzymes speed up chemical reactions, ___ they are not consumed during the process.
5. The researchers monitored the control group while the experimental group received the new vaccine.
6. A solution is considered acidic ____ its pH level is less than 7.
10. Stars emit ____ light ____ heat due to the nuclear fusion occurring in their cores.
11. Glaciers are melting at an accelerated rate ____ global temperatures continue to climb.
12. DNA replicates before a cell divides _____ each new cell receives an identical copy of the genetic code.