Alchemy Quiz 05

How many elements are in NaHCO₃?

• 3

• 4

• 6

• 12

Tags

NGSS.MS-PS1-1

If a copper compound is in solution, how would we designate that after the compound formula?

• (s)

• (l)

• (g)

• (aq)

Which of the following is false about atoms, elements and compounds?

• Different kinds of atoms can combine to make one kind of element.

• Compounds are made of more than one kind of element.

• Elements and compounds are both made of atoms.

• An element is always made of only one kind of atom.

Tags

NGSS.MS-PS1-1

Which statement is NOT a description of a chemical reaction?

• A liquid is heated on a Bunsen burner and its temperature rises.

• A solid is dropped into a beaker of liquid and an explosion occurs.

• Two liquids are mixed in a beaker and a solid forms at the bottom of the beaker.

• A solid is dropped into a beaker of liquid and a gas is released.

Tags

NGSS.MS-PS1-2

The copper cycle is a demonstration of what principle of chemistry?

• Most elements are metallic solids.

• Metals are excellent conductors.

• Elements exist as gases, liquids, or solids.

• Mass is conserved in chemical reactions.

Tags

NGSS.MS-PS1-5

Which of the following is evidence of a chemical change?

• change in shape

• change in size

• change in odor

• change in state or phase

Tags

NGSS.MS-PS1-2

Which of the following statements about chemical changes is false?

• Chemical changes can be reversed by physical changes.

• Chemical changes form new substances that have different properties.

• Chemical changes can be detected.

• Compounds can be broken down through chemical changes.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following statements about physical changes is false?

• Dissolving is a physical change.

• Changes of state (e.g., melting, boiling, etc.) are physical changes.

• Physical changes are often easily reversible.

• Physical changes can produce new substances.

Tags

NGSS.MS-PS1-4

In the following chemical equation, which are the reactants? Check all that apply. 

Fe_(s) + CuSO_4(aq) --> FeSO_4(aq) + Cu_(s)

• Fe_(s)

• CuSO_4(aq)

• FeSO_4(aq)

• Cu_(s)

Tags

NGSS.MS-PS1-2

In the following chemical equation, which are the products? Check all that apply.

Fe_(s) + CuSO_4(aq) --> FeSO_4(aq) + Cu_(s)

• Fe_(s)

• CuSO_4(aq)

• FeSO_4(aq)

• Cu_(s)

Tags

NGSS.MS-PS1-2