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Everyday Science

QuestionAnswer
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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