Properties of Matter
Which of the following is a fluid state of matter?
Solid, Liquid, Gas
Liquid
What is the symbol for Hydrogen?
H
The charge of an electron is positive, negative, or neutral?
Negative.
The number that is written before the compound/element is called what?
The coefficient.
Covalent and ionic.
An object's ___ is the pull of gravity on it.
Weight.
The ROWS on the periodic table are called what?
Periods.
The atomic number of an atom is equal to the number of ____ in the nucleus.
Protons.
The number 2 in the following element is called what? H2
The subscript.
Transferred.
A balance.
The amount of matter contained in an atom of an element is called ____
Atomic mass.
Where are the electrons arranged in an atom?
Energy levels.
__ SnO2 + __ H2 → __ Sn + __ H2O
Balance this equation.
1 SnO2 + 2 H2 → 1 Sn + 2 H2O
The electrons in a nonpolar covalent bond are:
Gained, lost, shared equally, or shared unequally.
Shared equally.
The density of an object is what kind of property?
A physical property.
What is the most reactive group on the periodic table called?
Alkali Metals.
Which sub-atomic particle is the lightest?
Electron, Proton, Neutron
Electron.
__ TiCl4 + __ H2O → __ TiO2 + __ HCl
Balance the equation.
1 TiCl4 + 2 H2O → 1 TiO2 + 4 HCl
The formula for phosphorus trichloride is ____
PCl3
The ability of a substance to go through a chemical change is called what?
Reactivity.
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Atoms with the same number of protons but a different number of neutrons are called:
Isotopes.
__ KOH + __ H3PO4 → __ K3PO4 + __ H2O
Balance this equation.
3 KOH + 1 H3PO4 → 1 K3PO4 + 3 H2O
What is the written out name of the following compound? N2O4
Dinitrogen tetroxide.