Show:
Elements/Compounds
Physical/Chemical changes
Matter
Physical Properties
Density
100
These are called pure substances because they are made out of only one kind of atom.
elements
100
Tearing paper is this type of change.
Physical change
100
What are the three states of matter?
solid liquid gas
100
What is a physical property?
A physical property is a characteristic of a substance that be observed or measured without changing the substance.
100
What is the definition of density?
The amount of mass in a given volume
200
These substances are not pure because they are made out of two or more different kinds of atoms.
a compound
200
Leaves changing colors in the fall is this type of change
chemical
200
What are two things that are NOT made of matter?
light and sound
200
What is an examples of physical property?
color, shape, size, odor, texture, taste, weight, density, solubility, conductivity, malleability, luster, magnetism, hardness, melting point,
200
What is the equation to calculate density?
Density = Mass divided by volume D = M divided by V
300
How many elements make up the following compound: FeCOHHe
5
300
When baking soda and vinegar are mixed together what piece of evidence do you see that confirms that this is a chemical change?
The production of a gas
300
What is matter?
Anything that has mass and takes up space
300
What physical property means the ability to be rolled or pounded into various shapes?
malleability
300
Calculate the density of an object that has a mass of 318g and a volume of 6cm?
53 g/cm
400
List one chemical symbol rule
first letter is always capitalized the second letter is always lower case there can only be one or two letters only there are no numbers
400
What do you call the chunky solid like substance that is formed when two liquids mix together during a chemical change?
a precipitate
400
What is the definition of mass?
Mass is the amount of atoms that make up a substance.
400
What are the three classes that elements are divided into on the periodic table of the elements?
Metals, metalloids, and nonmetals
400
How do you calculate the volume of a regular shaped object?
Multiply the length, width, and height
500
What element is found in the earth, the oceans, living things, and the atmosphere?
Oxygen
500
What are the four pieces of evidence that a chemical change has occurred? (the ones we did in the lab)
production of a gas color change change in temperature formation of a precipitate
500
How is mass different from weight on another planet?
Your mass will stay the same no matter what planet you are on but your weight will change.
500
What element class has good conductivity, high luster, and is very malleable?
metals
500
If the density of water is 1.0g/cm and an unknown object has a density of .68g/cm. Will this object sink or float in water?
Float because the density is less than 1.0