Which is it, groups or periods that go up and down.
100
Element
A substance that cannot be broken down into a simpler form by ordinary chemical means is called an?
100
In an electric fan electrical energy is transformed into mechanical energy and in loudspeaker the electrical energy is converted into sound energy.
What kind of energy transformation takes place in an electric fan and in a loudspeaker?
100
a property used to characterize materials in reactions that change their identity.
What is Chemical properties?
100
Liquid
Plasma
Solid
Gas
What are the 4 common phases of matter?
200
Technetium
What element does the symbol Tc represent?
200
Gas
The state of matter that has no definite shape or volume is?
200
Energy transformation involves changing one form of energy into another. For example, light energy is converted to heat energy and solar energy into electricity. It is also called energy conversion.
What is Energy Transformation?
200
any property used to characterize matter and energy and their interactions.
What is an physical property?
200
Melting
When a solid changes to a liquid it is called what?
300
To the right of the periodic table.
Where are the nonmetals?
300
solution
A mixture in which one substance is uniformly distributed in another substance is called an?
300
The energy transformation in a toaster is electrical energy to thermal energy. This energy is transformed as you heat up your bread in the process. This process is known as energy transformation.
What is the energy transformation in an toaster?
300
A physical property is an aspect of matter that can be observed or measured without changing it.
A chemical property may only be observed by changing the chemical identity of a substance.
What Is the Difference Between a Chemical Property and a Physical Property?
300
Condensation
When a gas changes into a liquid it is called what?
400
At the bottom of the periodic table?
Where is the Lanthide Series located?
400
A compound
A molecule is the smallest complete unit of?
400
Electrical energy is transformed into light and heat energy when it is applied to a light bulb. The law of Conservation of Energy states that energy can never be destroyed it only changes form.
What energy transformations take place when elestrical energy is applied to light bulbs?
400
physical
Is color a physical or chemical property?
400
Liquids
When solids reach their melting points they become what?
500
B, Si, Ge, As, Se, Sb, Te, Po, At
What is all the symbols of the Metaloids?
500
Solid
Matter that has a definite shape and is made up of tightly packed particles is classified as a
500
The energy transformations that occur when a match is lit or burned is characterised by creation of thermal energy. Thermal energy burns producing light at the wood eventually creating chemical energy. The end product is a transformation of chemical energy to electromagnetic energy.
What is the energy tansformation in burning a match?
500
Chemical
Is combustion a physical or chemical property?
500
Sublimination
What is it called when a solid changes directly into a gas?