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QR Challenge: Chemical Interactions - Test One

QuestionAnswer
What is the difference between CO and Co? CO is carbon and oxygen and Co is Colbolt
How is an element related to a substance?2 Elements put together make a substance2
List to ways you would know if a chemical reaction happened?3explosion, color change, fizz3
What is a chemical reaction?4When two or more substances are mixed together and form a new substance.4
What is the difference between a chemical and physical change?5Chemical- different ending product5
Give an example of a chemical change.6Many possible answers6
What is an element?7A substance that can not be broken down any more.7
Who discovered the periodic table?8Mendeleyev8
What are the 3 ways a substance can be written?9chemical formula, name, and common name9
What is the scientific method?10A step by step process scientist use to solve a problem10
What unit do you use to measure length?11meters11
Which elements are the most abundant?12H, C, O12
How is the periodic table arranged?12Atomic Number, metals/nonmetals12
Which elements are the most abundant in the ocean?13Hydrogen, Oxygen13
How was Mendeleyev able to predict undiscovered elements?14Arranging cards and found gaps14
What is mass?15A measure of matter15
What is matter?16Anything that has mass and takes up space16
What elements make up the gas Carbon Dioxide?17CO17
What is a chemical formula?18A code that represents the number and kinds of elements in a substance.18
What is density?19The ratio of mass and volume in matter19
Which group on the periodic table stretch, bend, and conduct heat and electricity?20Metals20
What two elements make up water?21Hydrogen and Oxygen21
What element has the symbol Na?22Sodium22
What elements are found in the universe?23All of them23
What is a hypothesis?24An educated guess24

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