Chemistry Exam

What is an atom consist of?

• Solids, liquids, gasses
• Protons and solids
• Protons, neutrons, and electrons
• Nothing

Tags

NGSS.MS-PS1-1

The opposite phase of melting is 

• freezing 
• sublimation
• condensation 
• deposition 

Tags

NGSS.MS-PS1-4

What is a characteristic of matter that can be measured or observed without changing matter into something new?

• matter
• molecule
• physical property
• states of matter

Tags

NGSS.MS-PS1-4

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

What is Sublimation

• A solid turning into a liquid 
• A solid turning into a gas 
• A gas turning into a solid 
• A liquid turning into a gas 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is a compound? 

•  the simplest form of a substance 
• a combination only of 3 elements 
• a combination of 2 or more elements 
• a place where people are held 

Tags

NGSS.HS-LS1-6

What is true about the combinations of elements to become a compound? 

• the properties of the element stay the same 
• the properties are  very similar to the outcome of the compound
• the properties will change when combined to form a compund
• nothing happens 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

Who atomic model said electrons orbit the atom like planets orbit the sun 

• Einstein
• Thomson 
• Bohr 
• Dalton 

Which of the following is a negatively charged subatomic particle?

• Electron
• Proton
• Neutron
• Quark