Molecules, compounds and mixtures

Wyatt, Indyana, Billy, Cody, and Jed were on a field trip to a gold mine. Their guide asked, 'What do we call a substance like gold or silver, which consists of a single atom?'

• coefficient

• element

• compound

• molecule

Ashley, Ethan and Charlie are working on a chemistry project. They are studying the composition of water and need to identify the smallest unbreakable unit of it. What is it called?

• subscript

• proton

• formula

• molecule

Charlie, Jed, and Tom were playing in the garden. They found a water hose and started spraying water. They learned that each water molecule is formed by combining two Hydrogen atoms with one Oxygen atom. How many Hydrogen atoms are used for each molecule of water?

• 2

• 4

• 1

• 10

Jed, Indyana, and Cody are in a science class. Jed argues that Hydrogen is a compound. Is Jed's statement correct?

• Yes

• No

Tom and Billy were working on a science project for school. They discovered that when they mixed vinegar and baking soda, they created carbon dioxide. Based on their experiment, can we say that carbon dioxide is a compound?

• True

• False

Wyatt, Billy, and Chase are working on their school project. They are trying to find out the smallest particle they can see under their school's microscope. What would that be?

• cells

• gases

• atoms

• liquids

TRUE OR FALSE:

Tom, Chase, and Charlie were studying for their chemistry test. They came across a statement while discussing the composition of water and salt: Every compound is a molecule and every molecule is a compound. Is this statement true?

• Yes

• No

Billy, Ethan, and Abbie are studying chemistry for their upcoming exam. They stumble upon a diagram in their textbook while revising. What does this diagram represent?

• atom of an element

• element

• molecule of an element

• compound

• molecule of a compound

Monique, Ethan, and Cody are working in a science lab. Miss Brownlee provided them with three samples and asked them to determine whether these are molecules of elements, compounds, or mixtures. If the samples are molecules of the first option, what should they report?

• elements

• compounds

• mixtures

Monique, Tom, and Cody are cooking dinner together. They are using water (H2O) to boil pasta and carbon dioxide (CO2) is being released from their soda. They wonder, are these molecules also compounds?

• YES

• NO