Which of the following is an example of a physical change?

• mixing vinegar and baking soda
• forming a precipitate
• tearing paper into two pieces
• rusting metal

When two or more elements are chemically combined this pure substance is formed.

• mixture
• compound
• solution
• element

Pure substances that cannot be broken down chemically into simpler substances are known as

• Elements
• mixture
• solution
• solids

Which of these would be a physical change?

• burning paper
• baking cookies
• rusting of iron
• freezing water

This is an example of a chemical change.

• cutting paper
• burning gasoline in an engine
• boiling water
• crushing a can

All elements are composed of _________________________ that cannot be broken down chemically.

• minerals
• ore
• compounds
• pure substances

The combination of sand and salt in a bowl is an example of a

• mixture.
• compound.
• formula.
• chemical property.

One thing that the periodic table does NOT tell you is

• atomic mass.
• atomic number.
• chemical symbol.
• element shape.

Water vapor in the air turns to liquid water in the form of rain. This statement describes an example of a

• chemical formula.
• chemical change.
• chemical equation.
• physical change.

One result of a chemical change  is

• a substance is shaped differently.
• one or more new substances.
• a substance that is reduced  in size.
• a substance that can be changed back to the original form.

Tags

NGSS.MS-PS1-2