Matter and Elements
what is anything that has mass and takes up space?
matter
What is formed when two or more elements combine in simple whole-number ratios of atoms?
compound
What type of bond is H2O?
Covalent bond
What is chemical formula?
A combination of symbols that show the ratio of elements in a compound
What is matter in its simplest form?
element
What do we call a group of two or more atoms held together by chemical bonds?
molecule
What type of bond is NaCl?
Ionic bond
How many atoms total are in C6H12O6?
24 atoms
What is the smallest form of an element that still displays its particular properties?
atom
True or false — all molecules are also compounds.
false (some, like O2, are not compounds)
What kind of bond forms when electrons are transferred from one atom to another?
Ionic bond
How many atoms of each element are in Ba(OH)2?
1 Barium atom, 2 Oxygen atoms and 2 Hydrogen atoms.
What are the two main parts of an atom?
a nucleus (protons and neutrons) and an electron cloud (electrons)
What holds the atoms in a molecule together?
chemical bonds
What kind of bond forms when electrons are shared between atoms?
Covalent bond
How many atoms of each element are in the following chemical formula: CH4OH?
What kind of charge does an atom have if it contains an equal number of protons and electrons?
neutral
What do compounds consist of?
Two or more elements combined in simple whole-number ratios of atoms
What is another name for a molecular compound?
Covalent compound
How many Oxygen atoms are in the following chemical equation? (On one side of the equation)
6CO2+6H2O→C6H12O6+6O2
18