Lap 1 Chemistry - Matter and Change

What is an example of matter?

oxygen gas

Intensive properties, such as color and malleability, can help to identify a substance.

true

Which of the following is an example of an extensive property?

A substance has a mass of 1.5 grams

A gas has neither a definite shape nor a definite volume.

true

In which state of matter are the particles close but can slide freely around each other?

liquid

In which state of matter are the particles easily compressed or can easily expand?

gas

We use the term "vapor" to describe a substance that is in the ___ state when at room temperature.

solid or liquid

What is an example of an irreversible physical change?

cutting hair

A physical property is a quality or condition of a substance that can be observed or measured without changing the substance’s

composition

Which of the following can be classified as a substance?

copper wire

Which type of matter can be separated by physical methods such as filtration or distillation?

mixtures

Which type of matter can be separated by chemical methods such as heating or electricity?

compounds

Another term for a homogeneous mixture is a…

substance

A process that separates a solid from a liquid in a heterogeneous mixture is…

filtration

Substances that contain 2 or more different elements combined in a fixed proportion are called…

compounds

Change that produces matter with a different composition that the original matter is a…

chemical change

A chemical change can break down compounds into…

elements

Hydrogen and Oxygen gases react to form water, H₂O. How much water would form if 10 grams of Hydrogen gas reacted with 40 grams of Oxygen gas?

50 grams

In a formula for glucose, C₆H₁₂O₆, what do the subscripts tell you?

How many atoms of each element are present in the compound

Which of the following is NOT a sign of chemical change?

change of state

Which of the following is an example of a chemical property of matter?

ability to combust (burn)