Top Forty Elements
What is the atomic number of Carbon?
6
Why do you sometimes need to balance equations?
To make sure that the number of molecules in the reactant equal the number of molecules in the product.
What is a polar bond?
A bond between atoms sharing electrons but the electrons are distubted unequally.
What is a suspension?
A suspension is a mixture made up of things that won't dissolve in each other and their for suspended in each other.
How are gasses different from metals?
any of the following answers is acceptable
Metals: usually solid at room temperature, conductive, high-density.
gasses: not solid at room temperature, not conducive, low-density.
What do people currently use mercury in?
Thermometer and batteries.
Is this equation balanced? Is this equation balanced? H2+O2->H2O
No.
What is a nonpolar molecule?
A molecule that is made up of atoms that share the binding electron/electrons mostly equally.
What is a colloid?
A colloid is a suspension mixture on the microscopic level. It's down to the individual molecules suspended in each other.
Are noble gases highly reactive?
No.
What is the average atomic mass of bromine?
79.904
A Mole is how many atoms?
6.02214076 × 1023
What is a covalent bond?
A covalent bond is a bond that is formed between atoms when they share the same electron/electrons.
What is a solution?
A solution is a mixture that is on the atomic leaval. The individual atoms are all mingled together.
What are metalloids?
Metalloids are the transition points between metals and non-metals and share characteristics of both.
Is neon a metal, metalloid, or non-metal?
Non-metal
balance this equation. Na+Cl2->NaCl
2Na+Cl2->NaCl
What is an ionic bond?
An ionic bond is a bond that forms between ions of opposite charges.
What happens on a chemical level when something is dissolving in water?
Because polar water molecules break other molecules apart.
In period 1 of the periodic table, all the elements are metals except one, what element is that?
Hydrogen.
What is silver’s atomic symbol?
Ag
Balance this equation Al+HCl->AlCl3+H2
2Al+6HCl-> 2AlCl3+3H2
What kind of bond does water have?
A Polar bond.
What is a solute and a sovent?
The solute minor component of a mixture and a sovent is the major component of a mixture.
How can you tell how many valence electrons (electrons in the last shell) are in most neutral elements just by looking at the table?
You can tell because groups 1,2,13, 14,15, 16, 17, and 18, share their last digits with the number of valence electrons in the elements in each group.