{ "@context": "https://schema.org", "@type": "Organization", "name": "Brainscape", "url": "https://www.brainscape.com/", "logo": "https://www.brainscape.com/pks/images/cms/public-views/shared/Brainscape-logo-c4e172b280b4616f7fda.svg", "sameAs": [ "https://www.facebook.com/Brainscape", "https://x.com/brainscape", "https://www.linkedin.com/company/brainscape", "https://www.instagram.com/brainscape/", "https://www.tiktok.com/@brainscapeu", "https://www.pinterest.com/brainscape/", "https://www.youtube.com/@BrainscapeNY" ], "contactPoint": { "@type": "ContactPoint", "telephone": "(929) 334-4005", "contactType": "customer service", "availableLanguage": ["English"] }, "founder": { "@type": "Person", "name": "Andrew Cohen" }, "description": "Brainscape’s spaced repetition system is proven to DOUBLE learning results! Find, make, and study flashcards online or in our mobile app. Serious learners only.", "address": { "@type": "PostalAddress", "streetAddress": "159 W 25th St, Ste 517", "addressLocality": "New York", "addressRegion": "NY", "postalCode": "10001", "addressCountry": "USA" } }

Week 1 - Isotopes, atoms and climate reconstruction. Flashcards

(17 cards)

1
Q

Homogenous mixture?

A

Has a uniform appearance.

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

Heterogenous mixture?

A

Has a variable appearance.

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

Molecule?

A

Substance composed of 2 or more atoms.

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

Compound?

A

Molecule with atoms of different elements. (If the atoms are the same elements its just still a molecule)

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

Element?

A

Simplest form of a substance that can occur in nature.

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

Atom?

A

Smallest unit of an element.

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

True or false? The names of chemical substances only start with a capital letter if they begin a sentence?

A

True.

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

Word cue - Negligable

A

The charge of a neutron
The mass of an electron
As they’re both zero

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

Atomic number?

A

Number of protons in the nucleus.

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

Mass number?

A

Number of protons and electrons in the nucleus.

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

Isotope?

A

Atoms of same element and number of protons but a different number of neutrons.

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

How is atomic mass measured?

A

relative to a 12C atom (So a usual carbon atom).

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

What’s the relative atomic mass (RAM) of an element?

A

Overall mass of elements protons and neutrons when
off periodic table - simple rounded number top left of symbol
When on periodic table its average sum of the masses of the elements isotopes weighed based on their abundances - bottom number under symbol much more specific.

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

Word cue -Water

A
  • 16O and 18O water reservoir climate cycle
  • Water is a Compound and made of Molecules and Atoms
  • Structure of a water molecule?
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Temperature isotope relationship?

A

Water molecules containing heavier isotope evaporate less readily.

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

Fractionation?

A

Disproportional evaporation.

17
Q

Calcareous?

A

(In animals); Extract calcium carbonate from water to form skeletal material.