Midterm 2024

Front

The way a metal’s surface reflects light is called _____________.

Back

Luster

Front

Approved eye protection devices (such as glasses) are used in the laboratory _____________.

Back

Anytime chemicals, heat or glassware are used.

Front

Is Gatorade powder dissolving in water a physical or chemical change?

Back

Physical Change

Front

Heat energy is also called ___________.

Back

Thermal energy

Front

The three examples pictured are of _____________.

Back

Contact Forces

Front

What is the definition of luster?

Back

Luster is the way a surface reflects light, often seen in metals.

Front

What are contact forces?

Back

Contact forces are forces that occur when two objects are in physical contact with each other.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter, related to the motion of particles.

Front

What is the purpose of safety goggles in a laboratory?

Back

Safety goggles protect the eyes from harmful substances, heat, and glassware.