7A Entry ticket elements, compunds, mixtures NHSPA

What is the picture displayed?

• atom

• element

• compound

Answer explanation

The correct choice is 'compound' because the picture displayed represents a substance composed of two or more elements chemically combined.

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

• formula

• atom

• subscript

• compound

Answer explanation

A compound is a chemical substance made up of 2 or more different types of atoms bonded together.

Made of entirely one kind of atom

• compound

• element

• mixture

• molecule

Answer explanation

Made of entirely one kind of atom corresponds to an element, which is the correct choice in this context.

Salt mixed in water is an example of this

• element

• compound

• mixture

• electron cloud

Answer explanation

Salt mixed in water is considered a mixture because it is a physical combination of two or more substances that retain their individual properties.

VOCAB : substance made of only one kind of atom

• mixture

• compound

• element

• ion

Answer explanation

The correct choice is 'element' because an element is a substance made of only one kind of atom, unlike a compound which is made of different types of atoms.

Which of these is not a mixture? 

• oil and water
• sand and soda
• diet soda
• all are mixtures