Chapter 2 Test

An element is a substance that

• exists naturally as a solid, liquid, and gas
• cannot be broken down into simpler substances
• is above 86 on the periodic table
• can be broken down only by chemical means

Which particles make up atoms?

• protons, neutrons, electrons
• protons, electrons, nuclei
• electrons, neutrons, ions
• neutrons, electrons, molecules

Tags

NGSS.MS-PS1-1

Which of the following is an element?

• water
• hydrogen
• air
• carbon dioxide

When elements are more stable in a combined form, which of the following forms?

• atoms
• metals
• nuclei
• compounds

Tags

NGSS.MS-PS1-1

Which property is the least useful in identifying minerals?

• streak
• hardness
• color
• luster

Out of the six mineral groups, only one group contains minerals that are made up of only one element.

• carbonates
• sulfates
• native elements
• oxides

What property is used to classify minerals into groups such as silicates?

• composition
• their shape
• the number of atmos
• the process in which they were made

A compound contains two or more

• elements physically combined
• simple substances
• elements chemically combined
• nuclei combined with electrons

Tags

NGSS.MS-PS1-1

Isotopes are atoms of an element

• with the same number of electrons but different numbers of protons
• that are radioactive
• with a magnetic charge
• with the same number of protons but different number of neutrons

Chemical bonds are likely to form when

• two atoms have the same number of electrons.
• an atom’s outer energy level doesn’t have the maximum number of electrons
• an atom’s nucleus has the same number of protons as neutrons
• an atom’s outer energy level is filled