Atoms
The number of hydrogen atoms in a molecule of H2
Two
H is the chemical symbol for this element
Hydrogen
The number of sodium atoms in table salt. (NaCl)
1 sodium atom
A substance made up of two or more elements chemically bonded
Compound
What is the center of an atom called?
Nucleus
The basic building block that makes up all elements
Atom
The chart used by scientists to list all the elements
Periodic Table
The number of carbon atoms in carbon dioxide (C02)
One
Is H20 a compound, molecule, element and(or) atom?
This is the branch of physical science that studies matter and the reactions of matter
Chemistry
What is He?
Helium
Substance made up of only one kind of atom
An element
What is the word used to describe how atoms in a molecule stick together?
Bond, bonding, or bonded
Is O2 a compound, element, molecule and (or) atom?
Element and molecule
Elements can occur in any of these phases/states
Solid, liquid, and gas
What is the difference between an atom and a molecule?
The atom is the smallest particle of matter and molecules form when two or more atoms bond together
Nitrogen
How many Hydrogen atoms are in C14H26O14?
26
How many atoms are in a molecule of glucose/sugar?
(C6H12O6)
24 atoms
Most elements occur in this state
Solid
What is Zn?
Zinc
Name this element Fe
Iron
Three oxygen molecules bonded together for the substance ozone. Ozone is an example of a molecule, compound, or both?
Molecule
What 2 elements create table salt?
Sodium and Chlorine NaCl
How many Hydrogen atoms are present (2H2O)
4