Name the three states of matter. How are they arranged?
Solid, liquid, and gas. Sold-particles are dense. Liquid particles are spread apart. Gas particles are spread apart.
What is gold known as on the periodic table?
Gold is known as AU
Is CO2 a compound or molecule?
Both
Is all matter made of molecules?
Yes
What is the differenve between a physical change and chemical change?
Physical changes do not produce a new substance as phycial changes do. Physical chnages do not chnage the object molecularly but physically for example ripping a peice of paper. Chemical changes are were there are chemical bonds but in a physical change there is only physical bonds.
What is the chemical name and formula for sugar?
Sucrose. C12H22O11
How do you identify H20 is a solid, liquid, or gas?
H20 (g)(l)(s)
What is the basic SI unit for mass?
Kilograms/grams
What does volume measure and name two different units othat might be used to measure volume.
Volume measures the amount of space tooken up in a subtance. Cubic meter/liter (liquids)
Is fire an element? If not what is it?
No, it is a mixture of hot gases.
Why is H2O a compound?
It is hydrogen and oxygen chemically combined.
What is silicon and what is five things it can be found in?
Silicon is a chemical element and its SI and the atomic number is 14. This can be found in construction material, ceramics, computer chips, rocks, and glass.
Can a compound have only one element? If so give an example.
Yes. Graphite.
Color change, precipitation, gas, odor, and temperature.
List 5 examples of physical properties?
Density, color, hardness, melting, and boiling.
When does the breaking of a chemical bond release energy?
When the bondes are formed inro the things used to break apart the bonds in the reactants.
What are Synthetic elements and give me an example of one.
Synthetic elements are ones that are not natuarally occuring, and uranium.
What is the combustion formula?
CH4+O2 yeild CO2 +H2O +energy
What are 5 chemical changes?
Digesting food, boling eggs, baking a cake, rusting iron, and ripening on fruits.
Does an electron in an atom move at all?
An electron in a stable atom do no move, but the amount of energy can also effect how much the elecrons move.
Why is mass conserved in chemical reactions?
The new substance made contains atoms present in the reactants.
Name the Russian Chemistry that formed the periodic table and describe how he arranged the elements.
How are molecules related to the state of matter?
Particles in the state of matter may be in the from of molecules or ions.
What elements mostly make up the earth?
Nitrogen, Oxygen, and Carbon Dioxide.
What are the name of the elements in H2SO4
Hydrogen, sulfur, and oxygen