Periodic Table Basics
………… orbits the nucleus of an atom.
What is electron?
Symbol for Helium is ……
What is He?
A homogeneous mixture made of two or more substances is ………
What is solution?
Anything which is man-made
What is Synthetic?
Element that gives off energy in the form of rays and particles is ……
What is a radioactive element?
Horizontal rows in the periodic table of elements are ………
What are Periods?
A chemical composition for salt can be written as NaCl.
What element is Na?
What is Sodium?
What is solvent?
Forces that hold atoms together are ……
What is chemical bonds?
The amount of time it takes for half an isotope in a sample to decay by emitting radiation.
What is Half-life?
Vertical columns on the periodic table are called?
What are groups?
Located at the end of the period table are non-reactive elements known as this.
What are noble gasses?
A substance present before a chemical change.
What is Reactant?
Fuels from recently living organisms:
What is Biofuel?
Particles made of 2 protons and 2 neutrons and are heavy and slow:
What is Alpha particles?
In the nucleus of an atom are the …… and ……
What is the protons and neutrons?
Located to the right of Alkali metals and not as reactive are
What is Alkaline Earth Metals?
A mixture made of parts that separate upon standing like oil and vinegar.
What is Suspension?
Important organic compounds in the body for cell growth and repair
What is Protein?
Atoms with same number of protons but different number of neutrons:
What is Isotope?
The pair who helped discover the radioactive elements Polonium and Radium
What is Marie and Pierre?
In group 1 of the periodic table and are very reactive are the ……
What is Alkali metals?
A reaction between an acid and a base to form salt and water is ……
What is neutralization reaction?
Fe + O2 —> Fe3O4
Balance the following Chemical Equation
What is 3Fe + 2O2 —> Fe3O4
When two nuclei with a smaller mass merge to form a stronger nucleus while releasing energy.
What is nuclear fusion?