B Science

Earth's atmosphere is made up mostly of which elements? (6.5B)

• Carbon dioxide and oxygen

• nitrogen and helium

• helium and carbon dioxide

• nitrogen and oxygen

Look at the circle graph of the different elements in Earth's crust.

Based on the graph, which conclusion can be drawn about the elements in Earth's Crust? (6.5B)

• Oxygen is more abundant than silicon.

• Silicon is more abundant than oxygen.

• Aluminum is more abundant than silicon.

• Calcium is more abundant than magnesium.

Which word describes two or more different elements that are chemically bound together? (6.5A)

• Solution

• Compound

• Element

• Atom

Tags

NGSS.MS-PS1-1

Which element makes up most of the Earth's crust? Write the element name and its chemical symbol. (6.5A)

Tags

NGSS.MS-PS1-1

How many elements are found in the formula shown below? (6.5A)

NaHCO₃

*HINT: JUST COUNT HOW MANY DIFFERENT CAPITAL LETTERS YOU SEE!

• 7 elements

• 4 elements

• 3 elements

• 6 elements

Tags

NGSS.MS-PS1-1

Horseplay is ___________ in the laboratory. (6.1A)

• never allowed

• sometimes allowed

• always okay

Long hair MUST ______________________. (6.1A)

• be groomed.

• be cut short.

• be tied back.

• be held with one hand during an experiment.

If a fire erupts in the lab... (6.1A)

• freak out and start screaming.

• run down the hallways.

• throw water on the fire.

• tell the teacher right away.

This picture represents _____________.

(6.5A)

• elements

• compounds

Tags

NGSS.MS-PS1-1

This picture represents a(n) ____________________.

(6.5A)

• element

• compound

• mixture

• solution

Tags

NGSS.MS-PS1-1