Does it matter where you put the dots on a Lewis structure? In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons interact, a simple way of representing those valence electrons would be useful. Again, it does not matter on which sides […]
How long was the era of nuclei?
How long was the era of nuclei? 380,000 years What did the first Dying stars create? The nucleosynthesis that occurs during the explosion of a supernova produces elements with a higher atomic number than iron, which cannot be created by nuclear fusion. When the first stars died out this way, brand new elements, including gold, […]
What would happen if temperature and precipitation changed in a climate zone?
What would happen if temperature and precipitation changed in a climate zone? Changes in temperature and precipitation can disrupt a wide range of natural processes, particularly if these changes occur more quickly than plant and animal species can adapt. In response, average temperatures at the Earth’s surface are rising and are expected to continue rising. […]
What is the difference between loudness and frequency?
What is the difference between loudness and frequency? Frequency (the number of vibrations or sound waves per second) is measured in Hertz (Hz). A sound that is 4,000 Hz (like the sound the letter “F” makes) has 4,000 waves per second. Intensity (loudness) is the amount of energy of a vibration, and is measured in […]
Had chlamydia for 2 years can I still get pregnant?
Had chlamydia for 2 years can I still get pregnant? Most women who have had chlamydia won’t have any difficulties conceiving that are related to the infection. There may be a greater chance of chlamydia affecting fertility if you have repeated infections or if it goes untreated and causes a condition called Pelvic Inflammatory Disease […]
What causes static electricity in a person?
What causes static electricity in a person? Static electricity is created when positive and negative charges aren’t balanced. Protons and neutrons don’t move around much, but electrons love to jump all over the place! When an object (or person) has extra electrons, it has a negative charge. Why is my laundry so static? What causes […]
Can fossils be found anywhere?
Can fossils be found anywhere? For example, many fossils form when plant and animal remains are buried by mud, sand, or soil. This helps to preserve the remains long enough for them to form fossils. Still, fossils can be found just about anywhere. From the tops of mountains to the depths of the seas, fossils […]
What are 2 units used for measuring volume?
What is the highest sea level in history?
What is the highest sea level in history? The current sea level is about 130 metres higher than the historical minimum. Historically low levels were reached during the Last Glacial Maximum (LGM), about 20,000 years ago. The last time the sea level was higher than today was during the Eemian, about 130,000 years ago. Will […]
When carbon reacts with a small amount of oxygen?
When carbon reacts with a small amount of oxygen? When carbon is oxidized in a small amount of oxygen, the principle product formed is carbon monoxide (CO), when the oxidation occurs in a higher concentration of oxygen, the principle product formed is carbon dioxide (CO2). What happens when carbon reacts with excess of oxygen? Carbon […]