Matter and Periodic Table Review
c. has different properties from the elements it is made of
A compound... a. is the same as a mixture b. has the same properties as the elements it is made of c. has different properties from the elements it is made of
c. physical property
A(n) ____________ of a pure substance can be observed without changing the substance. a. chemical property b. atom c. element d. physical property
c. Matter
Anything that has mass and takes up space in an example of... a. energy b. chemical change c. matter d. temperature
Ca
Atomic symbol of calcium.
Cl
Atomic symbol of chlorine.
Au
Atomic symbol of gold.
Mg
Atomic symbol of magnesium.
K
Atomic symbol of potassium.
Na
Atomic symbol of sodium.
Physical
Chemical or Physical Change A solid is crushed into a powder.
Physical
Chemical or Physical Change Crumbling a piece on paper.
Chemical
Chemical or Physical Change Eating and digesting cheese pizza.
Physical
Chemical or Physical Change Ice Melting
Chemical
Chemical or Physical Change Iodine turning a piece of bread black.
b. chemical property
If you described methane as a gas the easily catches fire, you are describing a... a. chemical formula b. chemical property c. physical property d. state of matter
d. chemical change
New substances are always formed when matter undergoes a _____________? a. change in shape b. physical change c. change in temperature d. chemical change
b. Can be separated
The parts of a mixture... a. Cannot be separated b. Can be separated c. Have new properties after they are mixed. d. Form a chemical combination of two or more atoms.
True
True or False A dependent (responding) variable is the factor in an experiment that is purposely changed to test a hypothesis.
False
True or False A pure substance made of two or more elements that are chemically combined in a mixture.
True
True or False An element is a pure substance that cannot be broken down into any other substance by chemical means.
False
True or False During a chemical change, the form of a substance is altered, but not its identity.
False
True or False Ice is an example of the liquid state of matter.
True
True or False Inferences are observations made by using your five sentences.
True
True or False Steel rod being heated into a molten metal is an example of a phase change.
c. Different samples have different properties
Which of the following is NOT a characteristic of a compound? a. Has different properties from the elements that formed it b. Pure substance made of two or more elements c. Different samples have different properties. d. Can be represented by a different chemical formula
a. They are composed of molecules.
Which of the following is NOT true of atoms? a. They are composed of molecules. b. They can combine with other atoms. c. They make up elements. d. They are extremely small.
d. burning a marshmallow
Which of the following is an example of a chemical change? a. melting butter b. mixing milk and chocolate syrup c. breaking a pencil d. burning a marshmallow
a. Color
Which of the following is an example of physical property? a. color b. ability to rust c. flammability d. ability to combust
a. elements
substances that cannot be broken down chemically into other substances are... a. elements b. compounds c. mixtures d. solutions
