(R) 5.5A Science STAAR (Properties of Matter)

Front

Which of these is the best conductor of electricity? (5.5A) Glass rod, Cotton string, Plastic tubing, Copper penny

Back

Copper penny

Front

A teacher mixes a white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating?

Back

Solubility

Front

A teacher sets up an experiment using five jars. The teacher keeps one jar unwrapped, and the other four jars are wrapped with equal thicknesses of four different materials. Which property of the materials wrapping the jars are the students most likely investigating?

Back

Thermal energy insulation

Front

A student reads the label on the bottle of salad dressing shown here. Why would the student shake the salad dressing well before using it?

Back

Vinegar and oil have different densities.

Front

Which of the following explains a useful method for removing some objects that blow into a swimming pool or that are dropped into the pool by swimmers, such as foam cups, keys, and coins?

Back

The foam cups are less dense than water, so they can be removed from the surface with a pool cleaning net.

Front

A cook uses the ingredients listed to prepare a meal. Which table correctly shows the physical properties of these ingredients when placed in hot water? (5.5A)

Back

Front

Based on the observations recorded by a student about four sealed containers holding different substances, which container most likely holds only gas?

Back

Container 3

Front

Which statement identifies a property that could be used to classify objects into two different groups? Options: Density can be used to separate objects that sink in water from objects that do not. Magnetism can be used to separate objects that are attracted by a magnet from objects that are not. Solubility can be used to separate objects that dissolve in water from objects that do not. Physical state can be used to separate objects that are solids from objects that are not.

Back

Density can be used to separate objects that sink in water from objects that do not.

Front

A student classifies the objects shown based on their physical properties. Which property cannot be used to classify these objects into more than one group?

Back

Solubility in water

Front

Based on the table, which material would be best to use to insulate electrical wires? (5.5A) Options: Wood, Plastic, Copper, Steel

Back

Plastic