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Elements
Elements VS. Compounds
Formation of a Substance
Bonus
Extra Bonus
100
What is the definition of an Element?
What is a part or aspect of something, esp. one that is essential or characteristic.
100
What is the difference between an element and a compound?
What is an element is an atom or molecule made of a single type of atom. What is a compound is a molecule made of two or more different elements.
100
What is a chemical change?
What is any process determined by the atomic and molecular composition and structure of the substances involved.
100
Which elements are common to living organisms?
What is Carbon,Oxygen
100
what best describes salt?
What is a compound
200
What are some elements make up the solid portion of the Earth?
What is Oxygen,(O) Silicon,(Si) Aluminum(Al),Iron (Fe) Calcium (Ca),Sodium (Na),Potassium (K),Magnesium (Mg)
200
In the photosynthesis, plants take in Carbon Dioxide, CO2 and give oxygen O2. Which one of these is an element and which is a compound.
What is Carbon Dioxide=Compound What is Oxygen=Element
200
What forms from a chemical change?
What is Chemical Changes result from the combining of two or more substances with a chemical reaction.
200
The written notation used to represent the number of atoms of each element in a compound is called the..
What is the Periodic Table
200
What is an example of a mixture?
What is Sand and Water Salt and Water Sugar and Salt
300
What part of the chemical symbol stands for Calcium.
What is Ca
300
Which of the following has no positive or negative charge? A. electron B. proton C. ion D. neutron
What is Neutron
300
What are some signs of a chemical change?
What is 1) Bubbles of gas appear 2) A precipitate forms 3) A color change occurs 4) The temperature changes 5) Light is emitted 6) A change in volume occurs 7) A change in electrical conductivity occurs 8) A change in melting point or boiling point occurs 9) A change in smell or taste occurs 10) A change in any distinctive chemical or physical property occurs
300
The state of matter that has no definite shape or volume is a(n)...
What is liquid
300
Sea water, smog, and brass are all examples of?
What is A mixture
400
Which are some of the elements that make up the atmosphere?
What is nitrogen N2 (78%) oxygen O2 (21%) argon Ar (0.9%), carbon dioxide CO2 (0.03%) - trace amounts of hydrogen H, ozone O3, methane CH4, carbon monoxide CO, helium He, neon Ne, krypton Kr, xenon Xe
400
The smallest unit of an element that has all the basic properties of the element is called a(n)?
What is Atoms
400
What are the evidences of a chemical change?
What is 1) Bubbles of gas appear 2) A precipitate forms 3) A color change occurs 4) The temperature changes 5) Light is emitted 6) A change in volume occurs 7) A change in electrical conductivity occurs 8) A change in melting point or boiling point occurs 9) A change in smell or taste occurs 10) A change in any distinctive chemical or physical property occurs
400
1. What creates more pollution… Creating energy by burning coal, or by collecting it from the sun?
What is Burning coal
400
What is the definition of a mixture?
What is A mixture is what you get when you combine two substances in such a way that no chemical reaction occurs between the components and you can separate them again.
500
Which are some of the elements make up the ocean?
What is Hydrogen H2O Oxygen H2O Sodium NaCl Chlorine NaCl Magnesium Mg Sulfur S Potassium K Calcium Ca Bromine Br
500
A molecule is the smallest complete unit of a....
What is A Compound
500
What are some evidences of physical change?
What is change shape change state (solid liquid and gas) and change sizes
500
Protons and neutrons of an atom are located in the...
What is the nucleus or center of the atom.
500
Which of the following describes Jell-O? 1.compound 2.mixture 3.element
What is A Mixture