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Unit 1 Discovering Matter

Student Name: ___________________
Date: ____________
Class: ___________________
Across
Cooking an Egg
Water (H2O)
A substances reaches its ____ when enough thermal energy is removes, the liquid turns into a solid.
No definite shape, but definite volume
The motion of atoms and molecules in a substance as temperature increases.
Mass is neither created nor destroyed.
Measured in Celsius with a thermometer
The energy of motion
Everything that has mass and takes up space
Process that rearranges the atoms of the original substances into a new substance that has different properties
Energy stored in the nucleus of an atom
Down
Reaction between Hydrogen Peroxide and Yeast
Reaction between Baking Soda and Vinegar
____ solve a problem
Thermal energy is a type of ____ energy.
Protons, Neutrons, Electrons
Smallest piece of matter
____ answer questions
A measure of mass in a given volume
Scaled-down first draft of a technology
C8H12N4O3
The ability to do work
Scientists use ___ to understand how the size of atoms relates to everyday objects.
Atoms are closely packed together