Chemistry 10-24-22 Chapter 1 Test Overview

CHEMISTRY – Are you ready? God bless you as you study! Here’s our overview of chapter 1 and the test – good stuff!!

Make sure you aren’t just reading your book and notes. First, memorize the facts, then go back and make sure you can apply the concepts. Study examples, make your own examples, practice making questions. And don’t forget, if you are getting lost with everything you need to know, or if you’re not sure how to study, Chapter 1 Stuff to Know Sheet under the Test Info tab.

If you want some interactive practice for the test (GREAT IDEA!!) here are a couple of great reviews from The Physics classroom. These are optional, so sign on as “Guest” if you want to do them:
Chemical vs. Physical Properties
Metals, Nonmetals & Metalloids
States of Matter
Energy & Chemical Changes
Classification of Matter

 

Also remember there are great review games that are in the Student Premium section of the online textbook. You can do this – I believe in you! I’m praying for you!!


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71 thoughts on “Chemistry 10-24-22 Chapter 1 Test Overview

  1. How do you identify a physical or chemical change? A physical change affects the appearance of a substance, but it does not affect the chemical composition or identity. An example of a physical change is cutting a piece of paper. In a chemical change, the identity is changed and a new substance is formed. For example, cooking is a chemical change.

  2. How is a liquid/Mercury a metal? Metals have a high luster and are magnetic. This shows that Mercury or the liquid is a metal because of its luster and magnetic ability.

  3. Why does a solid change into a liquid? The particles of a solid begin to vibrate faster once the solid is given energy. The solid’s structure breaks down after it’s particles vibrate so much and the solid is at a certain temperature. This is called a physical change, melting.

  4. How does a solid turn into a gas?

    A solid turns into a gas with a process called sublimation. Sublimation is when a solids particles are energized and enough heat builds up that the particles turn into a gas.

  5. Why does an exothermic reaction release heat? When releasing energy, heat is also released. Heat is a type of energy. So, in an exothermic reaction energy is released which is partly heat energy, releasing heat and lowering a temperature.

  6. Why does a solid become a liquid. When a solids particles begin to vibrate faster in makes a temperature change which makes the solid melt down and turn into a liquid.

  7. Mountain lions are being forced to interact with humans due to wildfires that are pushing them out of their homes. Mountain Lions generally don’t interact with humans and even though they were forced out of their habitats, they still went out of their way to not have to interact with humans. Scientists studied 9 mountain lions and learned that they just found unburned areas to live in and continued to ignore humans.

    https://www.sciencenews.org/article/mountain-lions-wildfires-risks-road-crossing

  8. I researched scientists feeling what animals feel. When animals get stressed they need to get their stress out by “playing” then they feel happy in that moment. Researcher’s have found that if you pick up a mosses tail they will be in a bad mood the rest of the day. The have found that some extra sugar with a bee will boost its mood. They have found that if you notice how a horse is standing it can tell you what kind of mood its in. Like if its happy its ears will be lifted.

    https://www.snexplores.org/article/animal-emotion-behavior-welfare-feelings

  9. I reasearched the discoveries of Kind Tuts tomb. Archaeologist Howard Carter came across King Tut’s tomb and found the gold burial mask, musical instruments, hunting equipment, jewelry and six chariots. While examining the tomb and hid body people have come up with 3 “secrets” about King Tut and his tomb. They are he may have not been frail, his obscurity led to fame, and his tomb was a rushed job for the egyptians.

    https://www.sciencenews.org/article/king-tut-tutankhamun-tomb-discovery-archaeology

  10. I researched an outbreak of malaria cases in the Ethiopian citie of Dire Dawa in early 2022. During this outbreak, more than 2,400 people were infected with malaria. An invasive mosquito that is spreading across Africa is the cause of all the sickened people. Scientist stated that the mosquito can thrive in urban environments which means that many more people across the continent could potentially be infected with malaria. Anopheles stephensi is a mosquito native to India and the Persian Gulf. This mosquito holds a parasite called plasmodium which causes malaria in people. Scientists questioned 80 different people that were infected with malaria and each one of them said that they lived near a water source used by the invasive mosquito, A. stephensi. Many scientists are worried about what might happen next with this malaria outbreak because A. stephensi has a ton of characteristics that are not easy to control. This makes it difficult for scientists to know how to stop the spread of malaria.

    Source: https://www.sciencenews.org/article/malaria-outbreak-ethiopia-invasive-mosquito-asia

  11. I researched on Melanoma stage III cancer treatment. Most people that have cancer at stage 3 usually get into surgery. Well one of the most recommended lately is neoadjuvant immunotherapy. With this treatment doctor’s started using it to patients at stage III of cancer. This treatment also works and has saved a lot of people from stage VI cancer. Scientist and doctors are still on the look out and are still finding treatment for melanoma cancer.

    https://www.sciencedaily.com/releases/2022/10/221026114353.htm

  12. I researched a new experiment that scientist have started that has decreased people’s nightmare rate from 3 to 0 per week. They use a technique called targeted memory reactivation which is when the patient try’s to learn something while listening to a cue of music. Then when the patient goes to sleep that cue is played which is a major factor in helping with memory storage. The scientist working on this experiment also believe that in the future this technique could also help with PTSD.

    https://www.sciencenews.org/article/treatment-nightmares-sleep

  13. I read about how there are more deer-vehicle collisions when daylight saving time ends. Scientist say that eliminating the switch could save 33 human lives and 37000 deer lives. When more traffic is out at night because of the time change, there are more deer collisions. Eliminating this clock change would mean less people are out in the dark which would end the crash spikes.
    https://www.sciencenews.org/article/deer-vehicle-collisions-daylight-saving-time

  14. Scientists would like to determine the health of a bridge using drivers’ cellphones. Not every bridge in the world has sensors on it to determine the integrity of the bridge. The scientists would like to use the GPS and accelerometer features already on a drivers’ smart phone to detect the integrity of a bridge as it crosses over it. One scientist decided to drive over a bridge at least one hundred times to collect data from his smartphone. He found that the apps that were used on his smartphone to monitor the bridge was pretty close to the data that he collected from sensors actually located on the bridge. The scientists think that this data could be useful in sending engineers alerts about possible problems with bridges from the data that was collected.

    https://www.sciencenews.org/article/crowdsource-cell-phone-data-bridges-safe

  15. I read about the effects of sunscreen on the coral reefs. Scientist already knew that the sun bleachers certain reefs that lack a “sun- protecting” algae. Most sunscreens have a chemical ingredient called oxybenzone. This causes the reefs to break down and lower their chances of healing damaged areas. Researchers are now looking into other ingredients that can act and perform as harshly as oxybenzone.

    https://www.sciencenews.org/article/sunscreen-damage-coral-reef-oxybenzone

  16. I read about this meteorologist named Joshua Wurman who is out to discover the secret ingredient that makes thunderstorms become tornadoes. They already know that tornadoes can occur from unstable air and wind shear but they are out to find the secret one. But why don’t all super cell thunderstorms make tornadoes? Why is it just 1 in 5? That’s what they are trying to find out. Scientists are close to discovering it using the VORTEX2.

    https://www.snexplores.org/article/twister-science

  17. There is a report that ever since daylight savings time started collisions with deer has increased. The amount of collisions with deer has increased by 16%. Scientists did studies in 23 states in both spring forward and fall back and dying the fall or daylight savings time, more wrecks caused by deer where present. Scientists have thought about not changing the clocks but that won’t effect the time the sun rises and sets so it would have little good effect on the crashes.

    https://www.sciencenews.org/article/deer-vehicle-collisions-daylight-saving-time

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