CA 1- Unit 1 Matter

When sulfuric acid is combined with sugar, gas is released and a tall, black column forms. This is an example of a

• Physical property

• Chemical property

• Physical property

• Chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which two physical properties are used to describe matter?

• mass and reactivity

• weight and toxicity

• volume and pH

• mass and volume

Which of the following describes a chemical property of oxygen?

• Oxygen is a gas at room temperature.

• An oxygen molecule has an atomic mass of 32 amu.

• The density of oxygen is 0.00133 g/cm3

• Oxygen reacts with iron to form rust.

Tags

NGSS.MS-PS1-2

Which of the following is a characteristic of all chemical changes?

• A new material is formed.

• A different state of matter is produced.

• A smell is produced.

• The substance gets smaller.

Tags

NGSS.MS-PS1-2

During an investigation, a student combined two substances. The student observed a decrease in temperature when the substances were combined. A milky substance was produced and fell to the bottom of the flask.

What is the most likely reason for these results?

• A portion of the substances crystallized.

• A solid appeared after the liquid evaporated.

• The combined substances chemically reacted.

• A portion of the substances dissolved.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Conductivity, a property of matter, is the ability to conduct heat or electricity. Some substances are better conductors than others.

Conductivity is an example of which type of property?

• Chemical property

• Intensive property

• Extensive property

• Dependent property

What is an extensive property that can be calculated?

• Boiling point

• Volume

• Viscosity

• Specific heat

Properties that remain the same regardless of the the amount present are classified as

• Intensive properties

• Extensive properties

• Chemical properties

• Physical properties

A lab technician is working on a sample of brass and testing its properties. Which of the following properties of the brass is an extensive property?

• Melting Point: 920 ° C

• Density: 8.52 g/mL

• Mass: 62.9 g

• Reactivity: Dissolves in strong acid

What statement correctly describes BOTH gases and liquids?

• undefined shape

• undefined volume

• defined shape

• defined volume