Atomic & Subatomic Particles
What are the three main particles in an atom?
(protons, neutrons, electrons)
What are the three most common states of matter?
(solid, liquid, gas)
What does each box on the periodic table represent?
(an element)
Are most elements metals or nonmetals?
(metals)
What is the smallest unit of matter?
(atom)
Which subatomic particle has a positive charge?
(proton)
Which state of matter has a definite shape and volume?
(solid)
What does the atomic number tell you?
(number of protons)
What is one property of metals?
(shiny, malleable, good conductor, etc.)
What is an element that cannot be broken down into simpler substances?
(an element itself)
Where are electrons found in an atom?
(outside the nucleus in electron shells)
Which state of matter takes the shape of its container but has a fixed volume?
(liquid)
What are the rows on the periodic table called?
(periods)
Which element group is brittle and poor conductors?
(nonmetals)
What happens to particle motion when heat is added?
(they move faster)
What is the center of an atom called?
(the nucleus)
In which state do particles move the fastest?
(gas)
What are the columns on the periodic table called?
(groups or families)
What are elements with properties of both metals and nonmetals called?
(metalloids)
Which scientist created the first periodic table?
(Dmitri Mendeleev)
Which particle determines the element’s identity (atomic number)?
(proton)
What state of matter is found in stars and lightning?
(plasma)
Which element has the atomic number 1?
(Hydrogen)
Give an example of a metalloid.
(boron, silicon, arsenic, etc.)
Name one way you can tell a chemical change has happened.
(color change, gas production, temperature change, precipitate, etc.)