Chemistry Review Quizizz

What is a pure substance?

• A material that can be physically separated into its parts

• A material that cannot be physically separated into its parts

• A mixture of different elements

• A substance that can be broken down by chemical means

How many elements are currently known?

• 100

• 118

• 150

• 200

What is an atom?

• The largest unit of an element

• A mixture of different substances

• The smallest unit of an element with the chemical identity of that element

• A substance that can be broken down into simpler substances

Tags

NGSS.MS-PS1-1

Which of the following is a property of elements?

• All elements have the same physical properties

• Each element has a unique set of physical and chemical properties

• Elements can be broken down into other substances

• Elements are made up of combinations of other elements

What is the atomic number of hydrogen?

• 1

• 2

• 118

• 0

Which element is located at the top right corner of the periodic table?

• Helium

• Hydrogen

• Gold

• Lead

What is the main characteristic that determines the identity of an element?

• Atomic number

• Atomic mass

• Element symbol

• Color

Which column of the periodic table contains a group of very reactive metal elements?

• First column

• Last column

• Middle column

• Second column

What are the three main subatomic particles found in atoms?

• Protons, neutrons, electrons

• Atoms, molecules, compounds

• Ions, isotopes, elements

• Quarks, leptons, bosons

What charge do protons have?

• Neutral

• Positive

• Negative

• No charge

Tags

NGSS.MS-PS2-3