Atoms & Elements
What are the building blocks of the universe?
Atoms
What do we call a combination of two or more different atoms joined together?
Compound
100: What is another word for all the solids, liquids, and gases in the universe?
Matter
What is the combination of protons and neutrons within every atom called?
Nucleus
Number of days in a week
7
Which element has only one proton in its nucleus?
Hydrogen
What is the center part of an atom where protons and neutrons are found?
Nucleus
What measures how much matter is in an object?
Mass
What is the amount of energy that holds an atom together called?
Chemical Bond
Number of weeks in a month
about 4
What is the number of protons in an atom's nucleus called?
Atomic Number
When two atoms join together, they form what?
Molecule
What do we call atoms that have the same number of protons but different numbers of neutrons?
Isotopes
What is the small piece of an atom with a negative charge that moves around the nucleus?
Electron
Number of days in a whole year
365
What do we call groups of atoms that have the same number of protons?
Elements
What is the small piece of an atom with a positive charge that sits inside the nucleus?
Proton
What is the study of matter and how it changes?
Chemistry
What element has 8 protons in its nucleus?
Oxygen
Number of hours in a whole day
24
What is another name for "chemical energy"?
Nuclear Energy
What is the energy that holds two or more atoms together?
Chemical Bond
What is the neutral particle that sits inside the nucleus?
Neutron
What is a scientific idea that has been tested many times with the same results?
Theory
Number of weeks in a year
52