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Vocab I
Vocab II
Periodic Table
Classification of Elements
Compounds and Mixtures
100
A small particle that makes up most types of matter.
What is an atom?
100
Neutrally charged, central part of the atom.
What is the nucleus?
100
The top number for each element in the Periodic Table that tells you the number of protons in the nucleus of each atom of that element.
What is the atomic number?
100
Generally have a shiny or metallic luster and are good conductors of heat and electricity.
What are metals?
100
Matter that has the same composition and properties throughout.
What is a substance?
200
Anything that has mass and takes up space.
What is matter?
200
Matter made of only one kind of atom.
What is an element?
200
The weighted average mass of the isotopes of an element.
What is the atomic mass?
200
Elements that are usually dull in appearance and are poor conductors of heat and electricity.
What are nonmetals?
200
A substance whose smallest unit is made up of atoms of more than one element bonded together.
What is a compound?
300
Invisible, negatively charged particles.
What are electrons?
300
Number of protons plus the number of neutrons it contains.
What is the mass number?
300
For the element Hydrogen, the Periodic Table block has the following information: Hydrogen 1 H 1.008 What would the atomic number be?
What is 1?
300
Elements that have characteristics of both metals and nonmetals.
What are metalloids?
300
When two or more substances (elements or compounds) come together but don't combine to make a new substance.
What is a mixture?
400
Positively charged particles in the nucleus.
What are protons?
400
A law that states that matter is not created or destroyed, it only changes form.
What is the law of conservation of mass?
400
For the element Thallium, the Periodic Table block has the following information: Thallium 81 TI 204.383 What would the atomic mass be?
What is 204.383?
400
The majority of elements on the Periodic Table can be characterized as _______________.
What are metals?
400
This type of mixture has larger parts that are different from each other. Ex: Chocolate chip cookies
What is heterogenous?
500
Uncharged particles.
What are neutrons?
500
Atoms of the same element that have different numbers of neutrons
What are isotopes?
500
Rows of elements are called ____________. Columns of elements are called ____________.
What are periods and groups?
500
More than 97% of your body is made up of various ______________, a classification that appears on the Periodic Table. (HINT: The answer is NOT water!)
What are nonmetals?
500
This type of mixture means "the same throughout." Ex: a gallon of milk
What is homogenous?