Chemistry

What is the atomic mass of this element?

• 20

• 60

• 40

• 41

Tags

NGSS.MS-PS1-1

protons

• negative charge, nucleus

• positive charge, shells

• positive charge , nucleus

• neutral charge, nucleus

The characteristics or properties of metals include

• shiny and solid
• ductile and malleable
• lose electrons
• all of the above

Which particle contributes the negative charge to the atom?

• proton
• electron
• neutron
• nucleus

Tags

NGSS.MS-PS1-1

Water is an element?

• true
• false

A pure substance that is a compound is made out of

• particles of more than one type of atom

• particles of the same type of atom

• a mixture of two or more substances that can be physically separated

Tags

NGSS.MS-PS1-1

Gold is an example of a(n) 

• pure element
• pure compound
• pure mixture

Tags

NGSS.MS-PS1-1

What is the number of protons that the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

"C" is the element symbol for which element?

• calcium
• carbon
• chlorine
• cadmium

What is a reactant?

• The starting substance
• The ending substance