What is Matter
What is the term for anything that has mass and takes up space?
matter
What is matter?
Anything that takes up space and has mass
What are the 3 states of matter?
solid, liquid, gas
How do you find the volume of a rectangular object?
Multiply the length, width, and height
What is the density of water?
1
What is the smallest particle of an element called?
atom
liquid, solid and gas are all what?
States of matter
True or False: A substance is a single kind of matter that has a specific composition
true
10
is dissolving salt in water a physical or chemical change?
physical
physical
Burning a paper is an example of a physical change or chemical change?
Chemical
Salt water and guacamole are 2 examples of what?
mixtures
A volume of 50 milliliters is the same as a volume of how many cubic centimeters?
50
What do you call it when a substance undergoes a change but is still the same substance after the change?
Physical change
A change that produces one or more new substances is called what?
chemical change
What holds atoms together in a molecule?
chemical bonds
What do you call a group of 2 or more atoms that are held together by chemical bonds?
molecule
If a liquid has a density of 2.33, will it float on top of water, or sink below it?
sink
What type of mixture would this be: homogeneous or heterogeneous-- 2 or more substances that are so evenly mixed you can't see the different parts.
homogeneous
Is the melting of an ice cube considered a physical change or a chemical change? Explain your reasoning.
The melting of an ice cube is considered a physical change. When an ice cube melts, it changes state from a solid to a liquid, but its composition stays the same (H2O). Such a change in state is considered a physical change since no new substance is formed.
The temperature will be higher after a reaction in an exothermic or endothermic reaction?
exothermic
The fact that matter is not created or destroyed in any chemical or physical change is called what?
The law of conservation of mass
How can you measure the volume of an irregular object
Place it in a graduated cylinder with water and measure the displacement
What is the difference between a mixture and a compound?
A mixture consists of two or more substances that are mixed together but are not chemically combined. The individual substances in a mixture keep their separate properties. A compound is a substance formed when two or more elements combine chemically. The properties of a compound are different from those of the elements that formed it.