Aluminum,, gold, and copper matter and its properties

A (a)   property is the ability or inability of a substance to combine with or change into once or more new substances.

When aluminum mixes with acid which two -

• Aluminum Chrloride

• Oxygen

• Hydrogen Gas

• It doesn't react

Matter with a density greater than 1 will ____.

• Float

• Sink

Is Platinum Heterogeneous or Homogeneous?

• Homogeneous

• Heterogeneous

The table shows the physical properties of four elements. Which element is classified as a metalloid?

• Titanium

• Selenium

• Potassium

• Polonium

Which source of water pollution includes oil and gasoline discharge from automobiles and storm sewer discharge?

• agriculture

• sedimentation

• bacteria

• urban runoff

How can a scientist, using the periodic table, find an element with properties similar to another element?

• by comparing density

• by finding its periodic group

• by comparing malleability

• by comparing atomic weight

After a chemical reaction occurs in an open test tube, measurements indicate that the mass of the reactants is greater than the mass of the products remaining in the test tube.  What MOST LIKELY explains the measurements?

• A gas was produced.

• A solid was produced.

• The salinity of the reactants was high.

• The temperature of the reactants was low.

We measure density using ___.

• A graduated cylinder or ruler

• A scale or balance

• A calculator

• 5 grams

• 15 grams

• 10 grams

• 50 grams