Compounds
Metals
Atomic Theory
Chemical Properties
Physical Properites
100
A pure substance consisting of two or more chemically combined elements.
What are compounds?
100
What is metal?
What is an element that is shiny and that conducts heat & electricity well.
100
What is the beginning of the atomic theory?
What is 440 B.C.E Democritas.
100
What are chemical properties?
What is property of matter that describes a substances ability to have chemical reactions.
100
What is a physical property of matter?
What is Density=mass _____ volume
200
What makes a compound?
What is two or substances chemically combined
200
What is a Non- Metal?
What is an element that conducts heat & electricity poorly.
200
Who were the three scientists involved in the discovery of atoms?
What is Dalton, Thompson,& Rutherford.
200
What is a chemical change?
What is a change that occurs between two or more substances when they change into new substances with different properties.
200
What is a physical change?
What is a change of matter from one form to another without a change in its chemical properties.
300
How can you break a compound?
What is heat & electricity.
300
What is a Metalliod?
What is an element that has properties of both metals and non-metals.
300
When did Dalton discover atoms?
What is 1803 elements combine in certain ratios.
300
What are three things that occur in a chemical change?
What is colors, fizzing & foaming, & release of light & heat.
300
What are two examples of physical changes?
What is water freezing, & sanding wood.
400
What are compounds in our world?
What is Nature= CO2
400
What are the basic metals in science?
What is metal, non-metal, & metalliod.
400
Who said that," Atoms are mostly empty space,"
What is Rutherford in 1909.
400
What is reactivity?
What is the ability to change into new matter.
400
What is a physical property?
What is any property used to characterize matter & energy & their interactions.
500
What is the difference between compounds & elements?
What is a compound can be broken down by a chemical change & a element can't.
500
What is the percent of metals in the periodic table?
What is 75%.
500
Who discovered that there were electrons in atoms?
What is Thompson
500
What is composition?
What is the type of matter that makes up the object and the arrangement of that matter.
500
What is the difference between a physical & chemical change?
What is a physical change is just a change in matter & a chemical change is when the substance changes.
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