Elements, Molecules, Compounds from Studyjams

What is at the center of every atom?

• an electron

• a compound

• a nucleus

• a molecule

What two particles make up the nucleus of an atom?

• protons and neutrons

• protons and electrons

• molecules and compounds

• neutrons and electrons

What is the role of an electron in an atom?

• electrons are found in the nucleus and have a negative charge

• electrons circle the nucleus and have a positive charge

• electrons circle the nucleus and have a negative charge

• electrons are found in the nucleus and have a positive charge

In an atom, the number of protons is equal to the number of --.

• electrons

• neutrons

• molecules

• nuclei

The type of element an atom makes or represents is determined by --.

• the size of the nucleus

• the number of protons

• the weight of the atom

• the number of neutrons

What forms when two atoms combine?

• a molecule

• a nucleus

• a proton

• an electron

Tags

NGSS.MS-PS1-1

What is a compound?

• the center of an atom (proton, neutrons, electrons)

• a tiny particle that makes up all matter

• a molecule that is formed by two or more different kinds of atoms

• a molecule made by two or more of the same type of atoms

Tags

NGSS.MS-PS1-1

A/an -- cannot be broken down into anything smaller.

• compound

• element

• chemical formula

• mixture

Which of these is most like a recipe?

• a chemical formula

• an element

• a periodic table

• an electron formula

What can you find on the Periodic Table?

• the chemical formula for salt

• the number of hydrogen atoms in a water molecule

• every compound in the universe

• all the elements that have been discovered