Physical Science
Physical Science 2
Physical Science 3
Physical Science 4
Physical Science 5
100
Each atom of this element has 20 protons in the nucleus
Calcium
100
H2O
water
100
a change in matter in which the substance that makes up the matter change into other substances.
chemical change
100
The number of protons in an atom of an element.
atomic number
100
a substance containing atoms of two or more different elements chemically bonded together.
compound
200
The temperature at which an element or compound changes from solid to liquid.
Melting Point
200
neither acid or base - pure water-PH=7
neutral
200
the ability of a substance to be hammered or rolled into sheets.
malleability
200
a row of the periodic table
period
200
How to find the number of neutrons in an element?
Subtract the atomic number from the atomic mass
300
mass per unit volume of an object or substance
density
300
NaCl
table salt
300
# of protons that are in an atom of Zn
30
300
a positively charged particle in the nucleus of an atom.
proton
300
a negatively charged particle that occupies the space in an atom outside the nucleus
electron
400
Chemical or physical property?
rust, flammability, combustibilty, acidity, basicity
chemical
400
new substances formed in a chemical reaction
products
400
made up of two or more substances but not chemically combined
mixture
400
CO2
carbon dioxide
400
Which reaction can be reversed? Physical or Chemical
Physical
500
Chemical or Physical Property?
malleability, ductility, solubility, density
Physical Property
500
a neutral particle in the nucleus of an atom
neutron
500
the ability of a substance to be pulled into thin wires
ductility
500
Number of protons, neutrons and electrons in Potassium
19 - protons
19 - electrons
20 - neutrons
500
a change in the size, shape, form, or state of matter that does not change the identity of the matter.
physical change