Chemistry 1
What is a heterogenous mixture.
When two or more atoms are joined together chemically
What is Molecule
Is the water in a saltwater solution the solute or the solvent?
What is solvent?
This Scientist performed the cathode ray tube experiment and discovered the electron (corpuscle).
Who is JJ Thomson?
Name an alkali metal
What are Li, Na, K, Rb, Cs, Fr
This type of mixture looks uniform throughout. Saltwater is a good example.
What is a homogenous mixture?
The element Calcium is in what group?
Group 2A, alkaline earth
Thew3 elements are found in group 8A on the periodic table of the elements.
What are noble gasses?
This is the average atomic mass of copper if copper-63 is 67% abundant and copper-65 is 33% abundant.
What is 63.66 amu?
What is the name of the negative subatomic particle?
What is electron?
What term refers to anything that occupies space, physical and chemical properties and exists in gas, liquid or solid form
What is Matter
All matter exists in four forms solid, liquid, plasma and ?
What is gas
The atomic number tells us this.
What is the number of protons?
This is the number of protons, neutrons, and electrons in the following:
209F1-
What is
9 protons
11 neutrons
10 electrons
The chemical name for the compound with the formula K2O
What is potassium oxide?
Elements represent unique forms of these little thingies. The building blocks of everything!
What are atoms.
A change in which the formula is not altered.
What is Physical Change
There are this many periods on the periodic table of the elements.
What is seven?
This is the temperature of 25 oC in Kelvin.
What is 298 kelvin?
ice is an example of which state of matter?
What is Solid
This is the smallest element
What is Helium
What type of change occurs when ice melts to water
What is Physical
an atom of an element has 15 protons, 15 electrons and 16 neutrons has an atomic mass of
What is 31
This is the mass of a block of gold if the density of gold is 19.32 g/mL, and the volume is 5.00 mL.
What is 96.6 g?
Solve with correct SF.
3.50 + 1000
1000
Atoms bond together to form these.
What are molecules?
When a substance loses electrons, the substance is
What is positively charged, or cation
the chemical name for the compound with the formula Na2S
What is sodium sulfide
Calculate the energy of light that has a wavelength of 283 nm.
What is 7.02 x 10-19 J?
Iron (Fe) is in which section of the periodic table?
What are the transition metals?