Matter Part 1
Matter is anything that takes up space and has __________.
mass
when a liquid changes back to a solid by cooling
properties observed without changing the identity of the object
physical
The number of protons that an atom has
atomic number
10
The smallest particles of matter are called ___________.
atoms
elements that have joined together to form a single unit
compound
measure of how quickly something catches on fire
flammability
the sum of all the protons and neutrons in the atom
atomic mass
atomic mass of lead
207.2
Particle with no charge.
neutron
bond that occurs when two elements share their electrons
covalent bond
chemical
the ability of a metal to be hammered without breaking into pieces
malleable
Element symbol for Hafnium
Hf
Particle with positive charge
proton
The phase change when an object will change from a solid phase directly to a gas phase without melting first.
sublimation
corrosion
total number of elements discovered so far
118
Element name for the symbol As
Arsenic
adjective that starts with "p" that describes small particles
particulate
The four states of matter are solid, ________, _______, and _______.
During a chemical reaction, the atoms are ________.
rearranged
group that characteristics of both metals and nonmetals
metalloids
the only two liquids at room temperature on the periodic table are bromine and _________.
mercury