The amount of matter in an object.

• mass

• volume

Which of the following involves a change in chemical properties?

• Boiling water to make steam

• mixing vinegar and baking soda to make bubbles of CO₂

• melting a bar of solid gold to make liquid gold

• tearing a piece of paper into smaller pieces

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If you are given 2 unknown samples of gray metals, how can you use physical properties to determine if they are the same?

• you can use their masses

• compare their densities

• compare their ability to react with acid

• you can identify the elements that they are made of

A student has sand, water, and chalk. Which 2 could the students combine to make a mixture?

• Only water and chalk can form a mixture.

• Only water and sand can form a mixture.

• Only chalk and sand can form a mixture.

• Any 2 of the 3 together can form a mixture.

Which of the following is classified as a compound?

• Pb₂

• CO₂

• Na

• H₂

Tags

NGSS.MS-PS1-1

Which of the following is NOT a physical property of matter?

• color

• density

• acidity

• solubility

How are elements and compounds related?

• Compounds make up elements. An element and its compounds have different properties.

• Elements make up compounds. A compound and its elements have different properties.

• Compounds make up elements. An element and its compounds have the same properties.

• Elements make up compounds. A compound and its elements have the same properties.

Tags

NGSS.MS-PS1-5

A measure of the amount of matter in an object

• Mass
• Volume
• Density
• Weight

A compound is a pure substance made up of ____________ elements that are chemically combined.

• zero

• one

• two or more

What is the atomic number of Oxygen?

• 15.999

• 8

• O

• 10

Tags

NGSS.MS-PS1-1