Este lixo é orgânico.

Este means this.

So Este lixo = This trash / This garbage.

In traditional grammar, este refers to something close to the speaker. In everyday Brazilian Portuguese, though, many people often use esse where older grammar would expect este.

These are all demonstratives:

• este = this (traditionally near the speaker)
• esse = that (traditionally near the listener)
• aquele = that over there / that one over there (far from both)

In modern spoken Brazilian Portuguese, the distinction between este and esse is often weaker, and esse is very common in everyday speech.

So while Este lixo é orgânico is correct, you may also hear Esse lixo é orgânico in real life.

Because este already acts as a determiner.

In English, we say this trash, not this the trash. Portuguese works the same way here:

• este lixo = this trash
• not este o lixo

The demonstrative already introduces the noun.

Lixo usually means trash, garbage, or rubbish.

It is a very common everyday word in Brazilian Portuguese. Depending on context, it can refer to:

• household trash
• waste in general
• something worthless or very bad, in an informal figurative sense

In this sentence, it is the normal literal meaning: trash/garbage.

É is the third-person singular present form of the verb ser (to be).

The subject is este lixo, which is singular, so Portuguese uses é:

• este lixo é = this trash is

Compare:

• este lixo é orgânico = this trash is organic
• estes lixos são orgânicos = these trash items / these wastes are organic

Because it agrees with lixo, which is masculine singular.

In Portuguese, adjectives usually agree in gender and number with the noun they describe.

Examples:

• lixo orgânico = masculine singular
• matéria orgânica = feminine singular
• resíduos orgânicos = masculine plural
• coisas orgânicas = feminine plural

So in Este lixo é orgânico, orgânico matches lixo.

The noun lixo is grammatically masculine, so it normally goes with:

• o lixo = the trash
• um lixo = a trash / a mess / rubbish depending on context
• este lixo
• lixo orgânico

Grammatical gender in Portuguese does not always match natural gender or logic. It is simply a property of the noun that you learn with the word.

The accents show pronunciation and stress.

• é has an acute accent and is pronounced like eh
• orgânico has the stress on gâ: or-GA-ni-co

The accent in orgânico helps show that the stressed syllable is not the default one.

A rough pronunciation guide:

• Este ≈ ES-chee or ES-tee depending on accent
• lixo ≈ LEE-shoo
• é ≈ eh
• orgânico ≈ or-GAH-nee-koo

Brazilian pronunciation varies by region, but that is a useful approximation.

Usually yes, but context matters.

In a waste-sorting context, lixo orgânico means organic waste, such as:

• food scraps
• fruit peels
• coffee grounds
• other biodegradable waste

In other contexts, orgânico can also mean organic in the sense of agriculture or food production, as in comida orgânica.

So the core meaning is similar to English organic, but the practical interpretation depends on context.

Yes, but the meaning changes slightly.

• Este lixo é orgânico = This trash is organic
• O lixo é orgânico = The trash is organic or Trash is organic, depending on context

Using este points to a specific trash item or pile of trash. Using o is more general or refers to trash already identified in the conversation.

Here it is grammatically singular.

Like English trash or garbage, lixo is often used as a mass noun, referring to waste in general rather than one countable item.

So even though it is singular in grammar, it does not necessarily mean one single piece of trash. It can refer to a quantity or category of waste.

Yes. Este lixo é orgânico is perfectly natural and correct, especially in a context like:

• sorting waste
• explaining recycling categories
• labeling bins
• talking about compost

That said, in casual Brazilian speech, Esse lixo é orgânico may be more common than Este lixo é orgânico. Both are understandable and correct, but esse is often more frequent in everyday conversation.