-
According to Kinetic molecular theory of matter, particles in a gas...
Expand to fill its container
-
According to Kinetic molecular theory of matter, particles in a liquid...
are packed closely together, but are not confined to specific positions
-
Which of the following are homogenous mixtures?
Mortar ( a combo of Calcium Carbonate and sand)
-
What is a pure mixture composed of two or more different elements?
An chemical compound
-
A pure substance mad of only one type of atom?
Element
-
What is the chemical symbol for LEAD?
Pb
-
What is the chemical symbol for PHOSPHOROUS?
P
-
Give an example of and Element.
S8
-
What term best describes, CO2?
Chemical compound
-
Examples of physical properties.
- Boiling point of ethanol
- Conductivity of Aluminum
- frying an egg
- Melting point of Gold
- Yellow color of Gold
- Copper is ductile and mallable
- Mercury is liquid at room temperature
- Density of silver
-
Examples of chemical changes.
- Tarnishing of silver
- Rusting of iron
- Combustion of butane gas
- Decomposition of water into Hydrogen and Oxygen
-
What are the postulates of Daltons Atomic Theory are now known to be incorrect?
- All atoms of a given element are the same
- Atoms are indivisable and indestructable
-
Which particle will not be deflected by charge plates?
Gamma rays
-
J.J. Thompson determined the charge to mass ratio of electrons by
Deflecting cathode rays wiht magnetic and electrical feilds
-
From the results of his Gold foil experiment, Ernest Rutherford concluded that
Atoms are composed of small, dense nucleus thats surrounded by a cloud of electrons
-
Alpha Particles are
Helium nuclei
-
Beta particles are identical to
electrons
-
Rank the subatomic particles from lowest to highest mass.
Electrons<Protons<Neutrons
-
Atoms with the same number of neutrons
63/29Cu and 64/30Zn
-
Give the mass number of Bromine with 46 neutrons.
81
-
How many neutrons are in colbalt-59?
32
-
Isotopes of the same element have the same number of ___________, but siffer in the number found in _________?
Protons, Neutrons
-
You have 0.330 moles of each of the following elements, Be, B, Ba, Br, and Bi. Which has the largest mass?
Bi
-
You have 4.15 g of each of the following elements; Ca, Cs, Cu, Ce, Cf. Which has the largest number of atoms?
Ca
-
What is the most abundant element in the universe?
Hydrogen
-
Which gaseous element comprises three quartes of the earths atmosphere?
Nitrogen
-
How many elements are in the fifth period of the Periodic table?
18
-
How many element are in the first period of the Periodic table?
2
-
What four elements make up over 95% of the human body?
Oxygen, Carbon, Hydrogen, Nitrogen
-
The smallest unit iinto which a pure substance, such as sugar or water can be divided, while still maintaining composition and chemical properties
Molecule
-
The formula for oxylic acid is, HO2CCO2H2, this is an example of an
Condensed formula
|
|
