Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science Inquiry A > Standard 2 > Flashcards

Standard 2 Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Is a cation positively or negatively charged?

A

Positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Is an anion positively or negatively charged?

A

Negative

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where do you find a cation on the periodic table? And why are they located there?

A

In column 1, 2, or 3 because these have less than 4 valence electrons, which means they will lose electrons resulting in them having more protons (+) than electrons (-).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Why doesn’t the atoms in column 4 become an ion?

A

Because they have exactly 4 valence electrons, that results in a tie between losing 4 or gaining 4, they will not become an ion–they will figure out a different way to become stable.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is an ion?

A

A positively or negatively charged atom found on the periodic table. It will have an imbalance of protons and electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is a neutral atom?

A

An atom that has an equal number of protons and electrons.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What the the charge of an electron?

A

negative -

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the charge of a proton?

A

positive +

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the charge of a neutron?

A

neutral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Where is a proton located?

A

In the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where is an electron located?

A

In the electron shells/orbitals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where is a neutron located?

A

In the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the atomic mass of a neutron?

A

1 amu

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the atomic mass of a proton?

A

1 amu

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the atomic mass of an electron?

A

1/1800 or 0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How do you determine the number of protons in an atom?

A

Atomic Number = # protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How do you determine the number of neutrons in an atom?

A

Atomic Mass - Atomic Number = Neutrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How do you determine the number of electrons in an atom?

A

protons = #electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is an isotope?

A

Different versions of the same element; that vary because they have different amounts of neutrons (which results in them each having different masses).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Why does radioactive decay occur in some isotopes?

A

Some isotopes have different amounts of neutrons–this can cause the nucleus to be too big (crowded) or have an imbalance between protons and neutrons (too many neutrons)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the half-life?

A

The amount of time it takes for 1/2 of the radioactive substance to decay to a more stable element.

22
Q

When an element undergoes radioactive decay it becomes…

A

A new element

23
Q

Choose a Lewis Dot Atom that will have a +2 charge when it becomes a cation.

A

Be+2, Mg +2, Ca +2

24
Q

Choose a Lewis Dot Atom that will have a -1 charge when it becomes a anion.

A

F-1, Cl-1

25
Q

Choose a Lewis Dot Atom that will have a +1 charge when it becomes a cation.

A

H+1, Li+1, Na+1, K+1

26
Q

Choose a Lewis Dot Atom that will have a +3 charge when it becomes a cation.

A

B+3, Al+3

27
Q

Choose a Lewis Dot Atom that will have a -2 charge when it becomes a anion?

A

O-2, S-2

28
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many protons are in Calcium-40?

A

20

29
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many protons are in Calcium 42?

A

20

30
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many protons are in Calcium 43?

A

20

31
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many electrons are in Calcium 40?

A

20

32
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many electrons are in Calcium 42?

A

20

33
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many electrons are in Calcium 43?

A

20

34
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many neutrons are in Calcium 40?

A

20

35
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many neurtons are in calcium 42?

A

22

36
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

How many neutrons are in Calcium 43?

A

23

37
Q

By what atomic particle do isotopes vary?

A

neutrons

38
Q

Why do isotopes have different masses?

A

Because they have varying amount of neutrons which lead to different masses.

39
Q

The following are three isotopes of Calcium.

Calcium-40, Calcium 42 and Calcium 43

Which is the above isotopes is found on the periodic table and why?

A

Calcium-40. It is the most abundant type of calcium found on Earth.

40
Q

Based on the image, how long is the half life?

A

1.3 Billion Years

41
Q

Based on the image, how many half-lives have occured?

A

5 Half Lives

42
Q

Based on the information from the image, what percent of the sample will remain after 5.2 Billion Years

A

Exactly 6.25%

43
Q

Where does nuclear fusion occur?

A

In stars

44
Q

Where does nuclear fission occur?

A

In a nuclear reactor

45
Q

What are the starting and ending elements in a nuclear fission reaction.

A

Start with heavy element and create smaller lighter ones.

46
Q

What are the starting and ending elements in a nuclear fusion reaction?

A

Start with smaller lighter elements and create larger heavier elements.

47
Q

In which reaction(s) is energy released…nuclear fusion or fission.

A

Both release energy; nuclear fusion is a cleaner type of energy than nuclear fission because radioactive decay is produced.

48
Q

How does a nuclear fission reaction begin?

A

By adding a single neutron to the already full nucleus causing it to split into two smaller radioactive elements that release neutrons; leading to a chain reaction.

49
Q

Why does alpha decay occur?

A

The nucleus is too big; it ejects 2 protons and 2 neutrons to free up space turning into a new element.

50
Q

Why does beta decay occur?

A

The nucleus is imbalanced between protons and neutrons. It ejects an electron; leading a neutron to turn into a proton. Creating more balance.

51
Q
A

Science Inquiry A (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions