Chemistry Quiz Review

(6.5A) A substance made of two or more elements that chemically combine and cannot be separated is called a(n)...

• compound
• reactant
• mixture
• conductor

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NGSS.MS-PS1-5

(6.5A) The element located at Period 3, Group 15 is

• Sr
• P
• N
• B

(6.5C) In this experiment, how can we tell a chemical reaction has taken place?

• The white color indicates a chemical reaction.

• The foamy bubbles indicate a chemical reaction is taking place
• The product of this reaction can be easily separated

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NGSS.MS-PS1-2

(6.5C) Which of these is evidence of a chemical reaction?

• Easy to separate
• A change in size or shape
• A change in temperature
• A change in state (from solid to liquid, or liquid to gas)

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NGSS.MS-PS1-2

NGSS.MS-PS1-4

(6.5A) Compounds are formed by

• Physical changes
• Mixing and stirring
• Chemical changes
• Elements separating

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

(6.5B) Which of the following statements is the most accurate?

• The Earth is made of equal portions of all elements (about 118)
• Nitrogen is a trace element in the earth's atmosphere.

• Very few elements (14-15) make up most of the earth's crust, atmosphere and organisms.

(6.5B) Trace Elements are _________________________

• Elements found in the Sun, the oceans and the earth's crust which are too small to measure with percentages

• Common elements in the Sun, oceans and earth's crust.

• Elements that the Sun, earth and ocean have in common.

• Impossible to extract from the ground.

(6.5C) How do we know that water turning from liquid to vapor is a physical reaction and not a chemical one?

• A. It is caused by a change in temperature

• B. It is only a change in the state of water

• C. Water vapor is the same shape as liquid and solid water.

• All of these are true
• Only A & B are true

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NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

(6.5B) Which two elements do the human body and the Earth's atmosphere have in common?

• Oxygen & Nitrogen

• Carbon & Argon

• Carbon & Oxygen

• Oxygen & Trace Elements

(6.5A) The formula below indicates that this substance is a/an ____________

• Compound - it has more than one atom

• Element - It has only one capital letter

• Metal

• Mixture - the two oxygens can be easily separated

Tags

NGSS.MS-PS1-1