What are some chemistry questions?
Chemistry
- Are two atoms of the same element identical?
- Can water stay liquid below zero degrees Celsius?
- Can you light diamond on fire?
- How bad of an alcoholic do you have to be to have your brain affected?
- How can glass be a liquid if it’s so hard?
- How do I know if something is an acid so I can avoid eating it?
What is chemistry short answer?
Chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.
Which is the father of chemistry?
ANTOINE LAVOISIER
What is the main goal of chemistry?
The main goal of chemistry is to seek to understand the behavior of matter by studying the behavior of atoms and molecules.
What are the objectives of teaching chemistry?
Chemistry Program Goals: To provide a broad foundation in chemistry that stresses scientific reasoning and analytical problem solving with a molecular perspective. To provide students with the skills required to succeed in graduate school, the chemical industry or professional school.
What are the goals of scientists who study chemistry?
Chemistry is the central science that can be related to all other fields of science and technology. Chemists are driven to understand the fundamental behavior of matter in terms of its properties and behavior. Chemicals shape, propel, protect, feed, cure, and stimulate us.
Which is a pure substance?
In the more general sense, a pure substance is any homogeneous mixture. That is, it is matter that appears uniform in appearance and composition, no matter how small the sample size. Examples of pure substances include iron, steel, and water. Air is a homogeneous mixture that is often considered to be a pure substance
How do you know if a substance is pure?
Distinguishing between pure substances and mixtures They also need to be able to test whether a substance is pure or impure. One way to test this is to find the melting point of a substance: pure substances have sharp melting points. mixtures melt over a range of temperatures.
Is gold a pure substance?
Pure Substance: The substances that are free from any kind of mixture and contain only one kind of particle are pure substances. Examples of pure substances include iron, aluminum, silver, and gold.
Is ice a pure substance?
Ice, iron, hydrochloric acid, calcium oxide, mercury are pure substances as they have definite composition.
What type of substance is ice?
Crystal methamphetamine (‘ice’, ice drug) is a stimulant drug, which means it speeds up the messages travelling between the brain and the body.
Is milk a mixture or a pure?
Main compounds of milk are lactose and casein. And it is also called a colloidal mixture (i.e. in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance). Therefore milk is regarded as a mixture not as a pure substance.
Is ice a homogeneous mixture?
Ice is a homogeneous mixture since particles are distributed uniformly within it. In air, all gases would have a uniform composition. Therefore, the air is an example of homogeneous mixture.
Is air a homogeneous mixture?
One example of a mixture is air. Air is a homogeneous mixture of the gaseous substances nitrogen, oxygen, and smaller amounts of other substances. A homogeneous mixture in which there is both a solute and solvent present is also a solution.
What is milk made of?
The major components of milk are water, fat, protein, carbohydrate (lactose), and minerals (ash). However, there are numerous other highly important micronutrients such as vitamins, essential amino acids, and trace minerals. Indeed, more than 250 chemical compounds have been identified in milk.
Is milk a colloid?
Milk is a colloid, with tiny globs of butterfat suspended throughout the liquid. suspension A mixture in which particles are dispersed throughout the bulk of a fluid
Is aluminum foil a pure substance?
If there is no physical process that will separate the sample then the sample is a “pure” substance. Otherwise the substance is an “element” (e.g., copper penny, aluminum foil). Compounds are made up of molecules or salts. elements are made up of single types of atoms.
Is water a pure substance?
Water, H2O, is a pure substance, a compound made of hydrogen and oxygen. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Most of the time, pure water has to be created. Pure water is called distilled water or deionized water.
What is aluminum foil made of?
Aluminum foil, or tin foil, is a paper-thin, shiny sheet of aluminum metal. It’s made by rolling large slabs of aluminum until they are less than 0.2 mm thick
Are Ziploc bags recyclable?
Yes, it’s true, Ziploc® brand bags are recyclable. Your used Ziploc® brand bags (clean and dry) go in the same bins as those plastic shopping bags.
Is a cardboard recyclable?
Cardboard, also referred to as old corrugated cardboard (OCC), is a readily recyclable material with well-established local markets for processing and manufacturing. Make sure cardboard is kept clean and dry as it is collected in your facility.
How long does aluminum take to decompose?
Aluminum cans can be recycled and be back on the shelf in as little as 6 weeks but takes around 250 years to decompose
How much of an aluminum can is recycled?
65 %
Is aluminum environmentally friendly?
Aluminum is not only a great material because it’s lightweight and conducts heat well, it can also be recycled indefinitely (if uncontaminated). There’s still a lot of aluminum lost to landfills, which can be improved by post-consumer recycling.
Where does garbage in the ocean usually end up?
This manmade debris gets into the water in many ways. People often leave trash on beaches or throw it into the water from boats or offshore facilities, such as oil rigs. Sometimes, litter makes its way into the ocean from land. This debris is carried by storm drains, canals, or rivers.
Why do humans throw plastic in the ocean?
Wastewater, wind, rain and floods also carry plastic from the land into the oceans, especially single-use plastics — bags, straws, cotton buds or wrappers — which, being lightweight, are easily carried on the wind to the coast or find their way to the river network before reaching the sea.
Who invented plastic?
We know it today as celluloid. Polyvinyl chloride (PVC) was first polymerised between 1838-1872. A key breakthrough came in 1907, when Belgian-American chemist Leo Baekeland created Bakelite, the first real synthetic, mass-produced plastic.