Vocabulary
Anything that has mass and occupies space
What is matter?
These symbols protect people in the workplace
What is WHMIS?
A substance's ability to resist being scratched.
What is hardness?
What is Atomos?
Invisible negatively charged particles that orbit the nucleus of an atom
What are electrons?
A substance made up of only one kind of matter or particle. Can be classified as either an element or a compound.
What is a pure substance?
Matter is organized according to whether it is a solid, liquid or a gas.
What is states of matter?
A substance that can be pounded or rolled into sheets is said to be ___________
What is malleable?
Those in this designation (job/calling) were credited with performing some of the first chemistry experiments.
What are alchemists?
This scientist determined that we could organize elements in a way that reflected patterns within their properties
Who is Dmitri Mendeleev?
The smallest unit into which matter can be divided. Contains protons and neutrons and is surrounded by electrons.
What is an atom?
These are characteristics that can be used to describe a substance
What are properties of matter?
This is the ability of a substance to conduct electricity or heat.
What is conductivity?
The scientist who determined that matter is made of tiny particles that group together in different ways to form individual substances
Who is Robert Boyle?
What is a period?
A measure of atomic mass: 1 amu = 1/12th the mass of Carbon 12 atom.
What is an Atomic Mass Unit?
The change in which a solid becomes a gas
What is sublimation?
The properties are ONLY observable when a certain change occurs
What is chemical change?
This scientist was the first to define an element as a pure substance and created the first modern theory of atomic structure.
This shows how many protons are in the nucleus of ONE atom of an element
What is the atomic number?
A cloudy mixture in which tiny particles of one substance are held within another and cannot be separated out from the other substance.
What is a colloid?
When two or more elements are combined chemically
What is a compound?
The amount of mass in a given volume of a substance.
What is density?
This scientist believed electrons do not orbit randomly around the nucleus of an atom, but rather they follow specific circular patterns. He also discovered the nucleus contains positively charged particles called protons.
Who is Niels Bohr?
These elements have both metallic and non-metallic properties
What are metalloids?