The central core of an atom which contains protons and usually neutrons is called the? nucleus - protons - elements- scientific theory
nucleus
Which of the following is a good conductor of heat? Metal - Nonmetal -Metalloid
Metal
Most of the elements on the periodic table are classified as _____. Metals - Nonmetals- Metalloids -Periods
Metals
All of these properties describe metals except... ? malleable - conductors- brittle - shiny
brittle
These are found on the Periodic Table. ? Compounds - Elements - Mixtures
Elements
Which is an electron? A - B- C
A
Two or more elements, compounds or substances that are mixed together, but not chemically combined are called? compound - mixtures - matter - models
mixtures
An __________ is a substance that cannot be broken down into any other substance by chemical or physical means. (pure substance) ? nucleus - element - neutron - proton
element
one or two letters that represent the name of an element ? element name -element symbol - atomic number - atomic mass
element symbol
Anything that has mass and occupies space is? nucleus- protons - matter- model
matter
a row on the Periodic Table of Elements? family - period - row- isotope
period
Two or more substance chemically combined in a specific ratio are called a ? compound - mixture- matter- model
compound
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