Journal Quiz 9/23/19

How many elements are there in the periodic table? Hint: check page 24 in your journal

• 135

• 140

• 125

• 120

How many elements are in the following compound?

CH₄

• 5

• 1

• 2

• 3

What elements are in the following compound?

CH₄

• carbon and hydrogen

• chlorine and helium

• carbon and helium

• chlorine and hydrogen

What are two types of pure substances?

• mixtures and solutions

• elements and compounds

• elements and mixtures

• solutions

When two liquids are mixed together, sometimes they form a solid. When this happens, the solid is called a _______________

• precipitate

• cloud

• Damp Rid

• calcium chloride

Evidence of a chemical change includes all of the following EXCEPT:

• color change

• change in state of matter

• production of light

• new substance created

Marie had a beaker with a small amount of baking soda. She added a few drops of pickle juice to the baking soda and observed fizzing and bubbling. Based on her observation, which of these can Marie determine about the new substance formed by mixing the baking soda and pickle juice?

• A chemical reaction produced a solid.
• A chemical reaction produced a gas.
• No chemical reaction took place.
• Only a physical change happened.

Tags

NGSS.MS-PS1-2

Which of the following characteristics is shared by all chemical reactions?

• Produce a precipitate
• Show a color change
• Release heat energy
• Form new substances

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Tags

NGSS.MS-PS1-1

Which of the following could be a symbol on he periodic table of elements?

• JZ
• jz
• Jz
• JZa