Atoms
Atoms are composed of these 3 subatomic particles?
Protons, neutrons, and electrons?
Substance made up of only one kind of atom.
Element
Two hydrogen atoms and one oxygen molecule make up one molecule of this.
One molecule of water
Define a compound
Two or more different atoms bonded together
Particle with a neutral charge in an atom.
Neutron
H is the chemical symbol for this element.
Hydrogen
The number of sodium atom in table salt. Hint: the symbol for table salt is NaCl
1 sodium atom
How can we tell how many different elements make up a compound?
The different element symbols; how many capital letters there are
Center of the atom that makes up most of the atom's mass.
The nucleus
Chart used by scientist to list all the elements.
Periodic table
All matter in the universe is made up of____________.
Atoms or Molecules
Sodium (Na) and Chlorine (Cl) are both poisonous. Why is NaCl (Salt) not?
The properties have changed
Particles located in the nucleus of an atom.
Protons and Neutrons
If an atom has an atomic mass of 25 and 9 protons. How many electrons does it have?
9
The definition of a molecule.
Two or more non - metallic atoms chemically bonded together
The correct formula for Potassium sulfide is:
K2S
What is the atomic mass
The number of protons & neutrons in the nucleus of an atom
Draw a bohr diagram for an atom that has 6 protons, 6 neutrons, and 6 electrons. (bonus if you can identify the element!)
Carbon
An example of a molecule is:
Answers will vary
E.g. Water, Carbon dioxide, Oxygen...etc
How are compounds different than mixtures?
Compounds can't be physically separated, mixtures can