Elements
How many elements are in the periodic table
118
What does thermal energy do to a solid state?
Makes it a liquid and then a gas
What is the difference between exothermic and endothermic?
Exothermic releases and Endothermic absorbs energy
What is coal made out of?
carbon
Name one gas element at room temperature the answers may very?
What is the density of brass around?
8.63
What is the definition of thermal energy?
The motion of atoms and molecules in a substance or object as its temperature increases
Sodium and chloride
What is the density of aluminum around?
2.70g
What is the definition of chemical energy?
A form of potential energy held in the bonds of atoms and molecules
What is aluminum's chemical symbol?
Al
What is the density of gold rounded to the nearest whole?
19
What is the definition of physical property?
a feature of a substance that can be observed or measured without changing the chemical structure of the substance (e.g., size, color, shape, boiling point)
What two atoms make glass?
Silicone and oxygen
Name one of the elements that is a liquid state at room temperature?
Bromine, mercury
What is the density of copper around?
8.96g
What is the definition of density?
a measure of the amount of mass in given volume; measured in kilograms per meters cubed 9kg/m3)
How many carbon atoms are in Benzene?
6