Atoms and Molecules Practice

This is a picture of __________________

• molecules

• atoms

• electrons

• protons

Tags

NGSS.MS-PS1-1

Which part of an atom is POSITIVELY charged?

• protons

• neutrons

• electrons

• atoms

What choice below best explains why two Hydrogen atoms below would bond together?

• Both hydrogen atoms want to fill their first energy level which holds two electrons.

• Magnetic forces attract the two hydrogen atoms together.

• Both hydrogen atoms like to party

• Hydrogen atoms are attracted to one another.

Why do the electrons surround the nucleus?

• the negative electrons are attracted to the neutral neutrons

• the negative electrons are repelled by the neutral neutrons

• the negative electrons are attracted to the positive protons

• the negative electrons are repelled by the positive protons

Tags

NGSS.MS-PS2-5

Which statement about atoms is true?

• Atoms combine to make all the substances on Earth.

• Atoms combine to make all the substances on Earth.

• Atoms are made up of smaller particles called molecules.

• Atoms come in different sizes, but most are visible using a simple hand lens.

Tags

NGSS.MS-PS1-1

How is a chemical element different from a chemical compound?

• A chemical element consists of one type of atom while a chemical compound consists of two or more different types of atoms bonded together.

• There is no difference between a chemical element and a chemical compound.

• A chemical element consists of one type of atom while a chemical compound consists of two or more of the same type of element bonded together.

• A chemical element consists of two different types of atoms while a chemical compound consists of two or more different types of atoms bonded together.

When more than one atom is attached it is called a ______.

Tags

NGSS.MS-PS1-1

Elements can be made of a single _____

• subatomic particle

• atom

• molecule

• particle

The total number of electrons in a neutral atom of every element is always equal to the atom's

• Number of Neutrons

• Number of Protons

• Number of Shells

• Atomic Mass Number

The following molecule is made from:

• Two atoms of carbon chemically bonded together

• One atom of chlorine chemically bonded together.

• One atom of chlorine and one atom of carbon chemically bonded together.

• Two atoms of chlorine chemically bonded together.

Tags

NGSS.MS-PS1-1