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ATOMS, ELEMENTS AND COMPOUNDS

Atoms, elements and compounds are all matter.

An atom is the smallest particle in ordinary matter that forms a chemical element.

Atoms are extremely small. Every solid, liquid, gas or plasma is made up of atoms.

- An element is a substance that cannot be broken down

into simpler substances by chemical means. Elements are made up of atoms.

What Elements Are Found in the Human Body?

There are 92 elements that occur naturally on Earth. For living things, only 11 of these elements are found in larger than trace quantities (0.01% are less).

The Top Four Elements Found in the Human Body

Of the elements found in the human body, four of them make up the largest percentage of our body weight (96.2%). The four elements are oxygen, hydrogen, carbon, nitrogen.

Why Oxygen? (O)

Our cells combine oxygen with nitrogen and hydrogen to produce various proteins that build new cells.

When oxygen is combined with carbon and hydrogen, you get carbohydrates that provide energy to our bodies. Every day, about seven hundred billion cells in our bodies wear out and must be replaced. Without oxygen, our bodies cannot build these new cells.

Why Carbon?

Carbon (C) makes up 18.5% of our mass. It is the basic building block required to form proteins, carbohydrates, and fats.

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CSEC English Mixed Revision Exercises (March 12, 2022)

English Language Review Section 1: Poetry & Figurative Devices Simile - a comparison using like or as She was as quiet as a mouse when the police questioned her. Metaphor - a comparison without using like or as My grandmother is my heart. Personification - comparing an inanimate object to a human (e.g) It felt like the pizza was calling my name 4. Hyperbole - an extreme exaggeration (e.g) I was so hungry I could eat a horse! Read the lines of poetry. Figure out which technique is being used: simile, metaphor, hyperbole, or personification. Your beauty was a web of frail delight. ( ) Now that I am without you, all is desolate. ( ) I could grow very still Like an old stone on a hill ( ) Your kiss lies on my face Like the first snow ( ) Section 2: Synonyms Choose the correct synonym to replace the underlined word. 1. The front page article reported that the senator suffered a serious injury in the car c...

Online Homeschool

Tests & Assignments this week: 1. Vocabulary test 2. Group presentation Write the meanings below. Brevity- using few words Amiable- to be lovable, sweet-tempered, or kind Amiss- improper, wrong, or faulty Chastise- to rebuke or reprimand severely; punish Detriment- state of being harmed or damaged Eccentric- unconventional or strange behavior Flagrant- obviously offensive Duress- force to do something by threatening Gingerly- with extreme care or caution. Hallowed- regarded as holy ******** Paraphrasing & Summarizing ******* This is an important area across all subjects. It avoids plagiarism. Let’s look at using synonyms correctly to help paraphrase & summarise: The United States, Germany, Japan and other industrial powers are being transformed from industrial economies to knowledge and information based service economies, whilst manufacturing has been moving to low wage countries . In a knowledge and information based economy, knowledge and inf...

CXC English 2023

Persuasive Writing Persuasion is the act or process of presenting arguments to move, motivate, or change your audience's mind. Common Persuasive Techniques 1.Emotional Appeals: One persuasive technique is appealing to the audience’s emotions: Fears, desire to seem intelligent, need to protect their family, desire to fit in, etc. 2. Rhetorical Questions: Rhetorical questions are questions that do not require an answer Example: Do we want our children growing up in a world where they are threatened with violence on every street corner? 3. Repetition: By repeating letters, words and phrases the author can reinforce an argument and ensure that the point of view being made stays in an audience's mind. 4. Evidence: Statistics, expert opinions, research findings and anecdotal evidence. 5....