Sci CA1 Review

I have an object that is dull, brittle, and an insulator, what is it?

• metalloid
• non-metal
• metal
• matter

When an object shatters when struck by a hammer.

• luster
• malleable
• brittle

• ductile

Which element is a metalloid?

• Titanium
• Selenium
• Potassium
• Polonium

A student is given a sample of an unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a nonmetal. He discovered that the unknown element conducted some heat and electricity, had a shiny luster, and broke easily. This element is most likely a 

• metal
• nonmetal
• metalloid
• cannot be determined

Which table below correctly lists the properties of metals and nonmetals? *

• A

• B

• C

• D

How would this element be classified?

• Metal
• Nonmetal
• Metalloid
• Metamorphic

Some students conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table . Based on these observations, which sample is most likely a nonmetal?

• Sample 1
• Sample 2
• Sample 3
• Sample 4

A student tested the conductivity of four elements using an incomplete electrical circuit. When the element is placed in the circuit, the bulb lights up brightly, lights up dimly, or does not light up at all based on the element’s ability to conduct electricity. The table below shows the results of her investigation. Based on the results of the conductivity test, which element is classified as a metal? 

• Hydrogen
• Arsenic
• Krypton
• Copper

Which of these grouping of elements could have the characteristic of luster (shiny)?

• Metal
• Nonmetal
• metalloids
• Both metals and metalloids

Which is a property of a metal?

• It is brittle
• It is a good Insulator
• It has a dull appareance
• It is malleable

Tags

NGSS.MS-PS3-3