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Science > Chapter 3 test cards > Flashcards

Chapter 3 test cards Flashcards

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1
Q

What is the group number for the Carbon family?

A

14

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2
Q

What is the group number for the Nitrogen family?

A

15

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3
Q

What is the group number for the Oxygen family?

A

16

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4
Q

What is the group number for the Halogen family?

A

17

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5
Q

What is the group number for the Noble gases?

A

18

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6
Q

Name a nonmetal in the Carbon family.

A

Carbon

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7
Q

Name a nonmetal in the Nitrogen family.

A

Nitrogen

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8
Q

Name a nonmetal in the Oxygen family.

A

Oxygen

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9
Q

Name a nonmetal in the Halogen family.

A

Chlorine

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10
Q

Name a nonmetal in the Noble gas family.

A

Neon

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11
Q

How can the properties of an element be predicted?

A

Its location on the periodic table

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12
Q

What are the four things in an element square on the periodic table?

A

Atomic number, chemical symbol, name, and atomic mass.

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13
Q

What are the physical properties of metals?

A

Shininess, Malleability, Ductility, and Conductivity.

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14
Q

How does the reactivity of metals change?

A

Left to right across the periodic table.

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15
Q

What is the most useful property of the metalloid?

A

The varying ability to conduct electricity.

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16
Q

What is Thomson’s model?

A

An atom as a ball of positive charge with electrons embedded in it.

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17
Q

Who discovered the nucleus?

A

Ernest Rutherford

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18
Q

What is a nucleus?

A

The tiny, positively charged center of an atom.

19
Q

What has a mass about equal to one amu?

A

A proton or a neutron.

20
Q

When did Dmitri Mendeleev notice the pattern of properties?

A

When he arranged the elements in order of increasing atomic mass.

21
Q

Who published the first periodic table?

A

Mendeleev

22
Q

What happened after protons were discovered?

A

Elements were rearranged according to atomic number.

23
Q

What can you do with a ductile material?

A

It can be pulled out, or drawn, into a long wire.

24
Q

What group are alkali metals in?

A

Group 1

25
Q

Are alkali metals ever found uncombined in nature?

A

No, because of it’s reactivity

26
Q

What is a diatomic molecule?

A

A molecule that is made up of two atoms.

27
Q

How many metals are in the halogen family?

A

One

28
Q

How many electrons does a halogen atom typically gains or shares?

A

One

29
Q

Are halogens reactive?

A

Yes

30
Q

What is a metalloid?

A

A element with some characteristics of metals and nonmetals.

31
Q

Who discovered the effects of radioactive decay?

A

Henri Becquerel

32
Q

How did Henri Becquerel discover the effects of radioactive decay?

A

Studying a mineral containing uranium

33
Q

What is radioactivty?

A

The spontaneous emission of radiation by an unstable atomic nucleus.

34
Q

What are tracers?

A

Radioactive isotopes that can be followed through the steps of a chemical reaction or an industrial process.

35
Q

What are tracers used for?

A

Biologists studying plants, engineers surveying flaws in metal and doctors detecting medical problems

36
Q

What is the cloud around the atom made of?

A

Electrons

37
Q

What is the particle with a plus sign called?

A

Protons

38
Q

What is the neutral particle called?

A

Neutron

39
Q

What is the whole atom?

A

Nucleus

40
Q

What are the four models of the atoms?

A

Rutherford, Thomson, Bohr, and Dalton

41
Q

What does Dalton’s model look like?

A

A round sphere

42
Q

What does Thomson’s model look like?

A

A positively charged sphere with negatively charged electrons

43
Q

What does Bohr’s model look like?

A

A sphere in the middle (6+) and 2 circles around it with electrons (e-)

44
Q

What does Rutherford’s model look like?

A

A sphere in the middle (6+) with many circles around in with electrons on the circles (e-).

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