Guardamos el magnesio líquido en la bolsa de magnesio.

Guardamos can mean either:

• we store / we keep (present tense)
• we stored (preterite, simple past)

Spanish has several verb forms that look the same in the nosotros form. So without context, guardamos is ambiguous.

Here, the surrounding context would tell you which meaning is intended. If this is a general description or instruction, it will probably mean we store / we keep.

The infinitive is guardar.

Spanish often drops subject pronouns because the verb ending already shows who the subject is.

• guardamos = we store / we stored

So nosotros is not necessary unless you want emphasis or contrast.

For example:

• Nosotros guardamos... = We store...
• Ellos guardan... = They store...

In the original sentence, leaving out nosotros sounds completely normal.

Spanish often uses the definite article where English might not.

So el magnesio líquido literally looks like the liquid magnesium/chalk, but in natural English it may simply be liquid chalk or the liquid chalk, depending on context.

Spanish uses articles more often than English, especially with concrete nouns when referring to a known item or substance in a specific context.

In Spanish, most adjectives normally come after the noun.

So:

• magnesio líquido = liquid chalk
• bolsa pequeña = small bag
• camisa roja = red shirt

That is the neutral, standard position for descriptive adjectives.

If an adjective goes before the noun, it often adds a special nuance, but here magnesio líquido is the normal order.

Because líquido agrees with magnesio, and magnesio is a masculine singular noun.

Agreement in Spanish means adjectives usually match the noun in:

• gender: masculine/feminine
• number: singular/plural

So:

• el magnesio líquido
• la bolsa pequeña
• los zapatos negros
• las botellas frías

Since magnesio is masculine singular, the adjective is also líquido.

Literally, magnesio means magnesium, but in sports or climbing contexts, Spanish often uses magnesio to mean chalk.

So magnesio líquido usually means liquid chalk, not literal liquid magnesium metal.

Likewise, bolsa de magnesio is the bag used for chalk, especially in climbing or gymnastics.

This is a good example of how a direct word-for-word translation can be misleading if you ignore the context.

Because en is the normal preposition for in / inside / into with location or placement in this kind of sentence.

• Guardamos X en Y = We store X in Y

Using a here would not sound natural.

So:

• en la bolsa = in the bag
• en la caja = in the box
• en el armario = in the cupboard

With guardar, en is the expected choice for where something is kept.

Because they refer to two related but different things:

• el magnesio líquido = the liquid chalk itself
• la bolsa de magnesio = the chalk bag

In English, repetition is often avoided more strongly, but in Spanish this is perfectly fine and natural, especially when it keeps the meaning clear.

Also, bolsa de magnesio is a fixed expression in climbing/sports contexts, so using magnesio again is normal.

Here de means something like:

• for
• of
• used for

So bolsa de magnesio literally is bag of chalk/magnesium, but the real meaning is chalk bag.

Spanish often uses noun + de + noun where English prefers a compound noun.

More examples:

• cepillo de dientes = toothbrush
• zumo de naranja = orange juice
• botella de agua = water bottle

So bolsa de magnesio follows a very common Spanish pattern.

Yes, the original word order is natural:

• Guardamos el magnesio líquido en la bolsa de magnesio.

It follows a very common pattern:

• verb + direct object + place

You could also say:

• Guardamos en la bolsa de magnesio el magnesio líquido.

That is grammatically possible, but it sounds a bit more marked or focused on where it is stored.

So the original sentence is the most neutral and natural version.

It is the thing being stored, so it is the direct object of guardamos.

Structure:

• Guardamos = verb
• el magnesio líquido = direct object
• en la bolsa de magnesio = prepositional phrase showing location

A useful test is to replace the direct object with a pronoun:

• Lo guardamos en la bolsa de magnesio.
• We store it in the chalk bag.

That lo shows that el magnesio líquido is the direct object.

Yes. Guardar is a common verb with several related meanings, including:

• to keep
• to store
• to put away
• to save
• to preserve

In this sentence, the best sense is to store / keep / put away, not save in the computer or money sense.

So although guardar can sometimes mean save, here store is the most natural interpretation.

Yes, very often. In Spain, magnesio commonly refers to the chalk used in activities like:

• climbing
• bouldering
• gymnastics
• weightlifting

A bolsa de magnesio is the small bag or pouch that holds that chalk.

So a learner might understand every individual word but still miss the real-world meaning unless they know the sports vocabulary.