Unit 4 Review: Elements/Compounds And Physical/Chemical Properties And Changes Question Preview (ID: 33292)


Review Of Elements And Compounds And Physical And Chemical Changes And Properties. TEACHERS: click here for quick copy question ID numbers.

A compound --
a) is made of one element.
b) cannot be broken down to a simpler form.
c) can be broken down into a simpler form.
d) is the same as an element.

All of the following are chemical reactions EXCEPT--
a) baking cupcakes.
b) burning a log.
c) iron rusting.
d) dissolving.

H-O-H --
a) is made of 3 elements (hydrogen, oxygen, and hydrogen) and is an element.
b) is made of 2 elements (hydrogen and oxygen) and is a compound.
c) is made of 2 elements (hydrogen and oxygen) and is an element.
d) is made of 3 elements (hydrogen, oxygen, and hydrogen) and is a compound.

How many elements are in CuCO3?
a) 3
b) 1
c) 2
d) 4

An element --
a) is made of two or more atoms.
b) can be broken down into a simpler form.
c) cannot be broken down into a simpler form.
d) is the same as a compound.

Which of the following is an element?
a) Ca
b) CO
c) CuCO3
d) H2O

Which of the following is a compound?
a) H2
b) Ca
c) H2O
d) Hydrogen

Which of the following is evidence of a physical change?
a) heat
b) light
c) sound
d) breaking

A precipitate, a type of chemical change, is a solid formed by mixing--
a) two solids.
b) a solid and a liquid.
c) two liquids.
d) a liquid and a solid.

A compound can have different physical and chemical properties than the elements that make it up.
a) true
b) false
c)
d)

Bubbles formed as a result of mixing two chemicals is an example of _________________change.
a) physical
b) chemical
c) organic
d) elemental

Blowing bubbles into your milk through a straw causes a ____________________ change.
a) chemical
b) physical
c) organic
d) elemental

Which of the following is an example of what might occur during a chemical change?
a) melting
b) breaking
c) bubbling
d) dissolving

A precipitate (solid formed by mixing two liquids) is formed during a--
a) chemical change which formed a new substance.
b) physical change which formed a new substance.
c) physical change in which a new substance was not formed.
d) chemical change in which a new substance was not formed.

Add vinegar to baking soda, and it begins to bubble. This is evidence that --
a) a physical change is happening
b) vinegar is an element that is being broken down
c) baking soda is a compound and cannot be broken down
d) a chemical change is happening and a new substance is being formed.

All of the following are physical changes EXCEPT--
a) frying an egg.
b) boiling.
c) freezing.
d) breaking.

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