UIL Practice Test- Spring 2022

Many evidences for chemical change occur by the sense of sight. Which of the following is not a chemical change evident by using sight?

• color change

• bubble formation

• precipitate formation

• strong odor

The density of carbon is 2.27g/cm3. If a sample has a volume of 1.75cm3, its mass must be which of the following?

• 1.29g

• 3.97g

• .77g

• 4.02g

this energy has the ability to generate electricity without emitting greenhouse gases but is reliant stable conditions in the environment. This energy can also cause environmental and social threats to humans, flora, and fauna. Based on these statements, which of the following energy is it referring to?

• coal

• oil

• radiant

• hydropower

Whipping eggs demonstrates which of the following?

• physical change

• chemical change

Based on the physical properties of a sample, which best classifies it? Dull, yellow, powdery, egg odor, and shatters when hammered

• metal

• metalloid

• nonmetal

• gas

A heat drying dishwasher dries dishes by primarily coverting-

• heat to electrical

• electrical to mechanical

• electrical to heat to light

• electrical to heat to mechanical

the four activites occur:

1. boy swimming laps in a pool

2. girl standing on a diving board

3. boy spiking a volleyball

4. girl holding a volleyball

Correctly identify each activity as kinetic or potential energy

• 1 and 2 are PE; 3 and 4 are KE

• 1 and 3 are KE; 2 and 4 are PE

• 1 and 4 are PE; 2 and 3 are KE

• 1-4 are KE

A car travels 25 kilometers in 30 mins. What is the average speed of this car?

• 50 km/hr

• .83 km/hr

• 1.2 km/hr

• 750 km/hr

A person roasting a marshmallow on the side of the fire gets thermal energy transferred to the marshmallow primarily by which of the following?

• convection

• radiation

• conduction

Which list correctly characterizes organisms that are classified as mammals?

• unicellular, prokaryotic, autrotrophic

• unicellular, eukaryotic, heterotrophic

• multicellular, prokaryotic, autotrophic

• multicellular, eukaryotic, heterotrophic