1st Six Weeks Test (7th) Review

What is the symbol for Mercury?

• M

• Li
• Hg
• Mg

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

• melting ice

• rusting iron

• breaking glass

• dissolving sugar

What is formed when two or more different elements are chemically combined?

• Mixture

• Atom

• Molecule

• Compound

What is considered the smallest unit of matter that retains the properties of an element?

• cells

• molecules

• atoms

• particles

Which of the following is a compound?

• O

• NaCl

• C

• Fe

What is the term for the number that appears before a molecule in a chemical equation?

• Subscript

• Prefix

• Coefficient

• Suffix

What is the name of this element? S

• Sulfur
• Silicon
• Selenlum
• Gold

What is an element?

• Basic building blocks of life
• A mixture that cannot be seperated
• Basic substance that can not be broken down into any other substance
• Two or more elements formed to make a new substance

How can you tell how many elements are in a compound?

• Count the capital letters
• Count the numbers
• Count the parentheses
• Count the atoms

Baking soda is mixed with a vinegar solution and bubbles begin to form from the solution. Which of the 5 evidences of chemical reaction are observed?

• C
• G
• L
• T
• P