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Everyday Science
| Question | Answer |
|---|---|
| A chemical bond involving shared electrons is called a- | covalent |
| Any substance that releases hydrogen ions into solution is called a- | an acid |
| A chemical reaction that adds electrons to an atom is called | reduction |
| .An extremely long molecule formed from numerous smaller molecules is called | a polymer |
| A susbstance with no fixed shape or volume is called | a gas |
| a material with a fixed volume but no shape is called a | a liquid |
| Table salt forms a crystal in which the elements are held together by | ionic bonds |
| What type of bond is formed when two oxygen atoms share electrons to from an oxygen molecule? | a covalent bond |
| What do you call a negatively charged particle found in atom? | electron |
| What do you call a positively charged particle found in an atom called? | proton |
| The smallest particle that can retain the properties of an element is called an- | atom |
| The nucleus of the atom was first discovered by who? | Ernest Rutherford |
| What do you call an electrically charged atom? | an ion |
| A material that cannot be broken down into other materials is called- | an element |
| When three atoms come together what do you call it? | a molecule |
| Sodium, carbon, hydrogen and oxygen are examples of what? | elements |
| What do you the dense, central portion of an atom? | nucleus |
| True or False: Ice melting to become water is an example of a chemical change | False: Ice melting to water is a physical change |
| True or False: 96% of the human body is composed of these elements: carbon, oxygen, hydrogen, and nitrogen | True |
| What is the mos abundant element by mass in the human body ? | oxygen |
| What is the chemical symbol for potassium? 1. P 2. Ps 3. K 4. Pt | K |
| True or False: Isotopes have the same number of proton and electrons, but they differ in the number of neutrons | True |
| The subatomic particles that are responsible for the chemical behavior of atoms are the: | electrons |
| Water is useful in body processes because: | It is a good solvent |
| Water is most dense at 9 degrees Celsius. True or False? | False 4 degrees celcius |
| True or False: The order of the building blocks of matter by size are: quark, neutron, nucleus, atom, molecule, | True |
| Which of these have the smallest mass? 1. atoms 2. molecule 3. proton 4. electron | electron |
| What does the cosmic rays orginate from? | outer space |
Created by:
IbukiMioda64
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