The particles in the atom that account for most of the mass of the atom are protons and __________________?
200
What is metals, metaloids , non metals.
What are the groups of metals?
200
What is by the number of neutrons and protons added together and their weight.
Explain how the atomic mass of an element is determined?
200
What is a homogeneous mixture.
What is a solution an example of ?
200
What is a combination of 2 or more elements.
What is a compound?
200
What is in a cloud like formation surrounding the nucleus.
In an atom where is an electron located?
300
What is
Carbon -6
Sodium-11
Nickel-28
Describe using the periodic table, what are the atomic numbers for carbon ,sodium , and a nickel ?
300
What is natural or synthetic material that cannot be broken down into simpler materials by ordinary means; has unique properties and is generally classified as a metal, metaloid , or non metals.
What is an element?
300
What is a combination of compounds and elements that has not formed a new substance and whose pro protons can be changed without changing the mixtures identity.
What is a mixture?
300
What is a compound is a substance produced when elements combine and whose properties are different from each of the elements in it.
What is a compound?
300
What is atom is a very small particle that makes up most kinds of matter and consists of smaller parts called protons, neutrons, and electrons.
What is an atom?
400
What is 3.
How many types of metals are there?
400
What is yes they are dull in appearance.
Are nonmetals dull in appearance?
400
What is mixture.
Draw conclusion. You are shown a liquid that looks the same throughout you are told that it contains more than one type of element ans that the portion of each varies throughout the liquid is this an element or a compound or a mixture ?
400
What is compound.
The new substance formed when elements combine chemically is a?
400
What is isotopes.
What are two atoms that have the same number of protons called?
500
What is Fe.
What is the abbreviation for iron?
500
What is yes potassium is an element.
Is potassium and element?
500
What is salad.
What is an example of a mixture?
500
What is sodium chloride.
What is salt?
500
What is an atom is a small particle that makes up most types of matter.