Name That Matter!
A scientist measures a substance's color, mass, and volume without changing what substance it is. These are examples of what type of properties?
What are physical properties?
A substance changes size or state, but its composition remains the same. What type of change occurred?
What is a physical change?
An atom has a specific number of protons that determines what element it is. Which vocabulary term represents this number?
What is the atomic number?
A sample has a mass of 40 g and a volume of 20 mL. The relationship between these two measurements is described by this vocabulary term.
What is density?
A change results in the formation of a new substance with new chemical and physical properties. What type of change occurred?
What is a chemical change?
The mass of an atom is expressed in atomic mass units and is approximately related to the number of protons and neutrons. What is this called?
What is atomic mass?
A solid is heated until it becomes a liquid. The temperature at which this transition occurs is called this.
What is the melting point?
Which vocabulary term describes a characteristic that can be observed or measured without changing the kind of matter being studied?
What is a physical property?
An element is located in the fourth horizontal row of the periodic table. Which vocabulary term identifies its location?
What is a period?
A liquid reaches the temperature at which it changes into a gas. What vocabulary term describes that temperature?
What is the boiling point?
A substance reacts with another substance and produces a new substance. Which vocabulary term describes the property that relates to this ability to react?
What is a chemical property?
Two elements are located in the same vertical column of the periodic table. Which vocabulary term describes this shared location?
What is a group?
A property is used to determine whether one substance will chemically react with another substance. What type of property is being investigated?
What is a chemical property?
A student observes a change and determines that the substance's composition has changed and a new substance formed. Which two vocabulary ideas best describe what happened?
What are a chemical change and chemical properties?
A mixture looks uniform throughout, and you cannot distinguish its individual particles. What type of mixture is it?
What is a homogeneous mixture?