Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200...

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Science 8 th Grade Chemical Interactions

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Transcript of Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200...

Page 1: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

Science

8th Grade

Chemical Interactions

Page 2: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

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Page 3: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

Row 1, Col 1

Each family in the periodic tablehas its own characteristic

properties based on the numberof ____________ or _________.

Valence electrons or protons

Page 4: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

1,2

The attraction between similarlycharged ions is called an

___________ bond.

ionic

Page 5: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

1,3

When 2 atoms share electrons it’scalled a ___________ bond.

covalent

Page 6: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

1,4

The principle of conservation of mass states ___________.

Matter can not be created or destroyed.

Page 7: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

2,1

Ions that are made of more thanone atom are called__________.

Polyatomic ions

Page 8: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

2,2

A covalent bond in which electrons are shared unequally

is called _____________.

polar

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2,3

Which particles of an atom arein the nucleus?

Protons and neutrons

Page 10: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

2,4

In water, bases make ________.

Hydroxide ions

Page 11: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

3,1

The electrons that bond between atoms are called_____________.

Valence electrons

Page 12: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

3,2

The pH scale measures________.

Concentration of hydrogen ions

Page 13: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

3,3

What happens when chemicalbonds break and forms new

bonds?

Chemical reaction

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3,4

A chemical reaction will alwaysshow a ________________.

New substance

Page 15: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

4,1

Neutralization is a reaction betweenan_____________and a ________.

Acid, base

Page 16: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

4,2

The substances on the left side of achemical equation are called the

______________.

reactants

Page 17: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

4,3

A chemical reaction thatabsorbs heat energy is_________________

endothermic

Page 18: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

4,4

A neutralization reaction will make__________ and a _________.

Water and a salt

Page 19: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

5,1

The number in front of a chemicalformula and the number below

an element’s symbol are called___________ and _______.

Coefficient and subscript

Page 20: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

5,2

The minimum amount of energyneeded to start a reaction is called the _______________

Activation energy

Page 21: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

5,3

In a water solution, how are acidsand bases different?

Acids form hydrogen ions/bases hydroxide ions

Page 22: Science 8 th Grade Chemical Interactions 100 200 400 300 400 Choice1Choice 2Choice 3Choice 4 300 200 400 200 100 500 100.

5,4

What happens when an atomloses an electron?

It becomes a positive ion


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