chemistry 6th-8th

What are the 3 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

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

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

are electrons negatively charged ?

• true

• false

how many protons are in Ca

• 20

• 23

• 55

• 78

what is it ?

• element

• atoms

• periodic table

• molecules

"C" is the element symbol for which element?

• calcium
• carbon
• chlorine
• cadmium

True or False? Neutrons have a negative charge

• True

• False

If I gain electrons I become

• Positive because I've added to my atom
• negative because I've added electrons
• same because i'm balanced
• equal because now I have electrons

Tags

NGSS.MS-PS1-1

An isotope of an element has the same number of _________, but a different number of _________.

• Protons, electrons
• Protons, neutrons
• Electrons, neutrons

Tags

NGSS.MS-PS1-1

What is the mass number of Chlorine-37 (Cl)?

• 17
• 37
• 7
• 35.45

Tags

NGSS.HS-PS1-8