Which property is required of a liquid in order for it to be a good fuel?

• Its acidity

• Its combustibility

• Its density

• Its boiling point

Which of the following is a physical property of copper?

• Ductile, can be drawn into a wire

• Liquid at room temperature

• Readily reacts with water to form an acid

• Readily reacts with oxygen

Which of these is the best example of a physical change?

• A match burning

• A cake baking

• A marshmallow roasting

• A candy bar melting

The process of iron combining with oxygen to form rust is considered a chemical change because rust has —

• properties that differ from both iron and oxygen

• the same chemical composition as iron

• a very high melting point

• greater chemical reactivity than oxygen

Tags

NGSS.MS-PS1-2

Tearing paper is an example of a —

• physical change

• chemical change

• chemical reaction

• solution

If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same.

Which of the following has occurred?

• A chemical change

• A temperature change

• A phase change

• A physical change

Which process is a physical change?

• Rusting iron

• Burning coal

• Tarnishing silver

• Melting ice

Which of the following does not use metric units to measure the density of a solution?

HINT: read the underlined words carefully.

• 10.5 grams/milliliter

• 1.56 pounds/fluid ounce

• 1050 kilograms/cubic meter

• 1.05 grams/cubic centimeter

A student determined the mass and volume of a gold ring. What physical property of the gold can be determined using these two measurements?

• Its reactivity

• Its expansion rate

• Its density

• Its melting point

Students measured and recorded the density of 4 samples. Using the density column and the data table shown above, which of the samples will probably float on top of the oil?

• Sample A

• Sample B

• Sample C

• Sample D

Tags

NGSS.MS-PS1-2