Show:
Science Stuff
Miscellaneous Matter
Elements
Chemical compounds
Periodic Table
100
This is the first step to the scientific method.
What is Making an observation
100
This is the definition of Matter.
What is anything that has mass and takes up space?
100
This subatomic particle has a negative charge.
What is an electron.
100
Change in color; Change in odor; Fizzing; Boiling; This is the only one of these that is NOT a sign of a Chemical Change.
What is Boiling
100
This is what atoms of elements in the same group have in common.
What is number of valence electrons.
200
This is how scientists test hypotheses.
What is doing experiments
200
The smallest unit of and element that maintains the properties of that element.
What is an Atom?
200
These particles make up the nucleus of an atom.
What is Protons and Neutrons.
200
This is the number and type of atoms present in a water molecule which has the formula H2O.
What is 2 hydrogen and 1 oxygen
200
This is what a column on the periodic table is called.
What is a group
300
This SI unit could be used to measure the height of a desk.
What is a meter
300
This is how accuracy is judged or determined.
What is how close a value is to the true value?
300
Because carbon's atomic number is 6 we know that it has this many of these subatomic particles in its nucleus.
What is 6 protons.
300
Color; Density; Reactivity; Solubility: This is the only one that is a Chemical property.
What is Reactivity.
300
This is the major family of most of the elements on the left side of the periodic table
What are Metals
400
This is 7,200,000,000 mm in scientific notation.
What is 7.2 x 109
400
According to the Law of Conservation of Mass; this is what mass cannot be.
What is Created or Destroyed.
400
This what the order of the periodic table is based on.
What is the number of protons in the nucleus (the atomic number).
400
This is what makes a compound different from a mixture.
What is held together by chemical bonds.
400
This is the name of an ionic compound made of calcium and chlorine.
What is Calcium Chloride
500
This is the number of significant figures in the following: 30,500
What is 3
500
This is what you call a change of state that goes from liquid to gas.
What is Evaporation?
500
These are atoms that have lost or gained electrons.
What is an ion.
500
These compounds have carbon-carbon double bonds.
What are Alkenes.
500
This is the name of a covalent compound made from one sulfur and two oxygen atoms.
What is sulfur dioxide