Matter, Properties, and Changes / The Periodic Table

A student tested in the lab some elements to determine their identity. He had three labeled test tubes with the letters X, Y, and Z. After all the tests he discovered that element X was reactive with Hydrochloric acid, it was good conductor of electricity, he was able to hammer it without breaking it and it was shiny. What type of element was element X?

• Non metal

• Metal

• Metalloid

A student tested in the lab some elements to determine their identity. He had three labeled test tubes with the letters X, Y, and Z. After all the tests he discovered that element Y was brittle (it broke easily), it was poor conductor of electricity and it didn't react with Hydrochloric acid. What type of element was element Y?

• Metal

• Non metal

• Metalloid

A student tested in the lab some elements to determine their identity. He had three labeled test tubes with the letters X, Y, and Z. After all the tests he discovered that element Z was both hard and brittle, it didn't react with Hydrochloric acid, and it was sometimes shiny and sometimes dull. What type of element was element Z?

• Metal

• Non metal

• Metalloid

What type of matter is iron rust (Fe₂O₃)?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture

What type of matter is air (N₂ + O₂ + H₂O + CO₂ + H₂ + He)?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture

What type of matter is table salt (NaCl)?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture

What type of matter is brass (Cu + Zn)?

• Element

• Compound

• Heterogeneous mixture

• Homogeneous mixture

What type of matter is a piece of gold jewelry (Cu + Au)?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture

What type of matter is orange juice with pulp?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture

What type of matter is represented in the image?

• Element

• Compound

• Homogeneous mixture

• Heterogeneous mixture