periodic table

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-4

What is made up two or more elements that are chemically combined?

• Element
• Mixture
• Compound
• Solids

Tags

NGSS.MS-PS1-1

Which part of an atom is POSITIVELY charged?

• protons
• neutrons
• electrons
• atoms

What part of an atom is NEGATIVELY charged?

• protons
• neutrons
• electrons
• atoms

Tags

NGSS.MS-PS1-1

Which part of an atom has no charge?

• protons
• neutrons
• electrons
• atoms

A compound is made of ________ atoms. 

• big 
• similar 
• different 

Tags

NGSS.MS-PS1-1

Carbon Dioxide is a ______ 

• compound 
• element 
• mixtures 
• Battle of Bunker Hill 

Tags

NGSS.MS-PS1-1

What is a pure substance made of two or more elements that are chemically combined called?

• A. element
• B. compound     
• C. mixture
• D. solution

If a spoonful of salt is mixed in a glass of water, what is the water called?

• A. solute
• B. solution
• C. solvent
• D. element

Is water an element?

• NO
• yes
• maybe
• I am not sure