What number tells you the number of protons and electrons
Atomic number
What is a compound
two substances that are chemically bonded
A mixture is a combination of two or more substances mixed but not ________ combined.
Chemicaly
What number tells you the number of protons and electrons?
Atomic number
What holds atomic bonds together
Chemical bonds
What is the name of element number 1?
Hydrogen
Do elements keep their original properties when they turn into compounds
No
In a mixture, substances can be separated by __________ means
Physicaly
How do you figure out the number of neutrons
Subtract the atomic number from the atomic mass
What causes atomic bonds to break
Input of sufficient energy
What is the name of the element with the elemental symbol Zr?
Zirconium
Why is a compound considered a free substance
Because its made of only one particle
What is a heterogenous mixture?
What is a mixture that does not appear to be the same throughout
How do you find an elements atomic mass
Add the number of neutrons and protons together
What type of bond is the weakest
ionic bond
What element has 42 as its atomic number?
Molybdenum
How can a compound be separated
chemical heat or electricity
What is a homogenous mixture?
What is a mixture that appears to be the same throughout
How many liquids are on the periodic table
2
Covalent bonds
What element has the element symbol yb
ytterbium
What property affects the ratio in which a compound is formed
The mass of elements
A type of mixture is where particles are mixed together but not dissolved (toothpaste) is called a ?
Colloid
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
Which is stronger polar or non polar
Polar bond is stronger