Fireworks exploding in the sky and giving off light are an example of what kind of change?
exothermic change
How can the volume of an irregular object be measured?
submerging the object in water in a graduated cylinder
Anything that has mass and takes up space is called?
matter
Soil, a salad, and sugar water are all examples of what?
mixtures
The change from liquid to solid, or the reverse of melting is called?
freezing
An uncovered pot of soup is simmering on a stove, and there are water droplets on the wall above the back of the stove. What sequence can you infer has occured?
vaporization, then condensation
What is the state of matter in which particles are arranged in the least organized manner?
gas
What is formed when two or more substances are so evenly mixed that you can't see the different parts?
mixture
How many cubic centimeters is the same as a volume of 25 milliliters?
25
What property of matter has examples of hardness, texture, color, and freezing point?
physical
T/F: A substance is a single kind of matter that has a specific composition.
True
T/F: To find the mass of a rectangular object, you multiply the object's length, width, and height.
False
T/F: A change that produces one or more new substances is called a physical change.
False
T/F: The basic particle of an elemen is called an atom.
