Chemistry Vocabulary Introduction to Chemistry

All ____________ are made up of two or more atoms bonded together.

• atoms

• molecules

• electrons

• elements

Tags

NGSS.MS-PS1-1

What is the Law of Conservation of mass/matter?

• Mass is created in a chemical reaction

• Mass is destroyed in a chemical reaction

• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants

• New chemicals formed in a chemical reactions have the same mass as the original reactants.

Tags

NGSS.MS-PS1-5

A teacher mixes a white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating? (5.5A)

• solubility

• hardness

• density

• mass

Tags

NGSS.MS-PS1-2

Sand and clay together is an example of

• a mixture

• a substance

an atom with atomic number 6 would have how many protons 

• 6

• 12

• 3

• cannot be determined 

What subatomic particles would you find in the nucleus of an atom?

• Protons only

• Protons and Neutrons

• Neutrons and Electrons

• Protons and Electrons 

Tags

NGSS.MS-PS1-1

What are the 3 subatomic particles that make-up the atom?

• protons, neutrons, and isotopes

• neutrons, isotopes, and electrons

• positives, negatives, and electrons

• protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

all matter is made of what 

• energy 

• atoms 

• electrons 

• compounds 

Tags

NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 

• positrons 

• neutrons 

• protons 

the central region of an atom where its neutrons and protons are is its 

• nucleus 

• electron cloud

• core 

• center