Chemistry Introduction

Water is an element.

• true

• false

The milk has turned sour.

• Chemical Change

• Physical Change

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NGSS.MS-PS1-2

An atom's atomic number will tell you how many protons and electrons it has.

• True

• False

Which sub-atomic particle is responsible for reactions between most atoms?

• Proton

• Neutron

• Electron

• None of these

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Evidence of a chemical change includes:

• Color changes

• Temperature changes

• Small explosions

• All of the above

Tags

NGSS.MS-PS1-2

a charged atom

• neutral

• isotope

• ion

• nucleus

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NGSS.MS-PS2-5

same number of protons, different number of neutrons

• atomic number

• mass number

• isotope

• ion

Chemistry is a branch of science to study

(I) Interactions between matter

(II) Structure of matter

(III) Composition of matter

(IV) Properties of matter

• I, II, and III

• I, II, and IV

• II, III, and IV

• I, II, III, and IV

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What holds atoms together in a molecule?

• physical bonds
• chemical bonds

Tags

NGSS.MS-PS1-1

How do liquid water, ice, and water vapor differ from each other?

• They are different states of matter.
• They are different compounds.

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NGSS.MS-PS1-4