Aluminum and Mercury

though

Used to add a contrasting idea, often at the end of a sentence.

go

To move or travel from one place to another; to leave or continue.

happens

Takes place or comes about, often without being planned.

add

Put something together with something else, or include more.

suppose

To think something is probably true, especially without being certain.

quite

Fairly or completely, depending on the context and variety of English.

why

For what reason or purpose.

allow

To let someone do something or let something happen.

mercury

A heavy silver liquid metal used in some scientific instruments and older thermometers.

plane

An aircraft with wings; a flat surface in mathematics or design.

went

The past form of go: moved or traveled to another place.

bought

The past form of buy: paid money to get something

strip

A long narrow piece of material, land, or surface.

cut

To divide, shorten, or wound something with a sharp tool.

small

Not large in size, amount, number, or importance.

section

One part of something larger, such as a document, place, or group.

drilled

The past form of drill: made holes or trained by repeated practice.

hole

An empty space or opening in a surface or object.

through

From one side, place, stage, or time to the other side or end of it.

little

Small in size, amount, age, or importance.

crater

A large round hole in the ground.

important

Having great value, meaning, or effect; needing attention.

because

For the reason that something is true or happened.

super

Very good, enjoyable, or larger than usual.

annoy

To make someone feel slightly angry or impatient.

without

Not having or using someone or something.

just

Only or simply, with nothing more.

slide

To move smoothly over a surface or move something smoothly into a place.

off

Away from a place, position, or machine; no longer operating.

plate

A flat dish used for food; a thin flat piece of metal or other material.

normal

Usual, expected, or not different from what usually happens.

conditions

The plural form of condition: the state something is in, or a rule that must be followed.

surrounded

The past form of surround: was all around someone or something.

protective

Wanting to keep someone or something safe from harm.

oxide

A chemical compound made when oxygen combines with another element.

layer

One thickness, level, or sheet of material that covers or lies between others.

metallic

Made of metal, like metal, or having a shiny metal quality.

able

Having the skill, power, or chance to do something.

penetrate

To enter or pass through something, often with force or effort.

barrier

Something that blocks movement, progress, or communication.

does

The third-person singular present form of do: performs or completes an action.

nothing

Something of no importance or value.

sometimes

On some occasions, but not always.

possible

Able to happen, exist, or be done.

get

To receive, obtain, become, understand, or arrive at something, depending on context.

things

Objects, facts, ideas, or activities, especially when not named separately.

manually

By hand or by a person, rather than automatically by a machine.

scratch

To rub or cut a surface lightly with nails, claws, or something sharp.

away

In or to another place, direction, or distance.

tried

The past form of try: made an effort or tested something.

three

The number 3, or a written symbol for this number.

times

Plural periods, occasions, or moments when something happens.

even

Used to emphasize something surprising, extreme, or additional.

force

Physical strength or power that pushes, pulls, or makes something happen.

using

The present participle of use: doing something with a tool, method, or resource.

drill

A tool for making holes, or repeated practice for training.

either

One or the other of two people or things.

think

To use your mind to form ideas, opinions, plans, or memories.

maybe

Possibly; used when something is not certain.

slow

A low-speed part of a song, journey, or activity.

started

The past form of start: began something or made something begin.

leave

To go away from a place; to let something remain somewhere.

hour

A period of sixty minutes.

came

The past form of come: moved toward or arrived at a place.

back

Toward an earlier place, position, or state.

change

To make or become different.

clearly

In a way that is easy to see, hear, or understand.

use

To do something with an object, tool, method, or ability.

different

Not the same as another person or thing.

strategy

A careful plan for reaching a goal or dealing with a problem.

instead

In place of someone or something else.

try

To make an effort to do something or to test whether something works.

mechanically

In a way that relates to machines or happens without thought.

chemically

By using chemicals or in relation to chemical processes.

took

The past form of take: moved, carried, accepted, or needed something.

added

The past form of add: put something more with another thing.

acid

A chemical substance that can react strongly and often tastes sour.

quickly

At a fast speed or after only a short time.

reacts

The third-person form of react: responds to something or changes chemically.

dissolves

The third-person singular form of dissolve: mixes into liquid or gradually disappears.

exposes

The third-person form of expose: to show something hidden, or put someone in contact with danger.

fresh

New, clean, recently made, or not old or spoiled.

metal

A hard, usually shiny material such as iron, gold, or aluminum.

let

To allow something to happen, or to rent property to someone.

minute

A period of sixty seconds, or a short written record of a meeting.

rid

Free from something unwanted, usually after removing it.

start

The beginning of an action, event, or period.

reform

To improve a system, law, or organization by changing it.

amalgamation

The process or result of joining things into one whole.

almost

Very nearly, but not completely.

right

Correct, suitable, or morally good.

really

Used to say something is true, strong, or more than expected.

hard

Difficult to do or understand; also firm and not easy to bend.

reflection

An image seen in a mirror, water, or shiny surface.

better

Of higher quality, health, skill, or suitability.

noticed

Saw, heard, or became aware of something.

hair

The thin strands that grow from the skin of people and many animals.

process

A series of actions or changes that produce a result.

set

To put something in a position, choose a value, or make something ready.

major

Very important, serious, or large in size or effect.

thing

An object, idea, action, or fact when its exact name is not given.

here

In, at, or to this place or position.

combination

A mixture or joining of two or more things.

amalgam

A mixture of different things, often metals or ideas.

forms

The third-person present form of form: makes, develops, or takes shape.

gets

The third-person singular form of get: receives, obtains, becomes, understands, or arrives.

dissolve

Become weaker.

makes

Creates, prepares, or causes something to happen.

way

A method, direction, route, or manner of doing something.

top

The highest part of something; also a spinning toy or upper piece of clothing.

comes

The third-person form of come: does or performs that action.

contact

Communication with someone, or physical touching between things.

oxygen

A gas in air that people, animals, and fires need.

air

The mixture of gases around Earth that people and animals breathe.

white

Having the color of snow or milk. It can also describe people with light skin.

part

One piece, section, or role of something larger.

pretty

Attractive in a pleasant, delicate, or charming way.

short-lived

Lasting only for a short time.

cover

To put something over or on top of something else.

protect

To keep someone or something safe from harm, damage, or danger.

prevents

The third-person form of prevent: stops something from happening or stops someone from doing something.

fiber

A thin thread-like part of material, or plant food that helps digestion.

grow

To become bigger or older; to make plants develop.

directly

In a straight line, immediately, or honestly.

obviously

In a way that is clear or easy to understand.

continue

To keep doing something or keep happening.

sides

The plural form of side: outer parts, surfaces, teams, or positions.

dissolving

The -ing form of dissolve: mixing into liquid or gradually disappearing.

difference

A way in which two people or things are not the same.

shut

To close something, or to become closed.

itself

Used to refer back to the same thing, animal, place, or idea for emphasis.

down

Toward a lower place, level, or position.

creep

Move slowly and quietly.

along

From one end or side of something toward another.

surface

The outside or top layer of something.

amalgamate

To join two or more things into one larger whole.

theory

An explanation or set of ideas used to understand why something happens.

keep

To have something and not lose it, or to continue doing something.

until

Before a particular time or event happens.

entire

Including every part, person, or thing.

thick

Having a large distance between opposite sides, or made of many close parts.

deeper

Further down, further in, or more serious than before.

compromise

To settle a disagreement by each side giving up something.

strength

Physical power; also the quality that makes someone or something effective or difficult to break.

takes

The present form of take: gets, carries, needs, or accepts something.

long

Measuring a great distance or time from one end to the other.

four

The number 4.

hours

The plural form of hour: periods of sixty minutes or the times when a place is open.

later

At a time after the present or after the time mentioned.

decide

To choose after thinking about different possibilities.

spun

The past form of spin: turned around quickly or made thread by twisting fibers.

around

In a circle, nearby, or in different parts of a place.

side

One of the flat or outer parts of something.

looked

The past form of look: used the eyes to see, or seemed a certain way.

lot

A large amount or number; also an area of land used for a purpose.

cooler

A container or machine that keeps things cold.

bit

A small amount or piece of something.

sad

Feeling unhappy, or making someone feel unhappy.

anyway

Used to continue, change, or finish what you are saying.

poke

To push someone or something quickly with a finger or pointed object.

structurally

In terms of structure or the arrangement of parts.

strong

Having great physical power.

sure

Confident that something is true; certain about something.

expect

To think something will happen or believe someone should do something.

how

In what way or by what method.

fragile

Easily broken or damaged.

looks

The third-person singular form of look: uses the eyes, searches, or seems.

like

Similar to someone or something, or in the same way as them.

surprisingly

In a way that is unexpected or unusual.

milligrams

The plural form of milligram: units for very small weights.

clean

To remove dirt from a place or thing.

edges

The outside lines, sides, or borders of things.

reveals

The plural form of reveal: moments when hidden things are shown.

silver

A shiny gray-white precious metal used for jewelry, coins, and decoration; also a medal for second place.

stuff

Things, materials, or belongings when you do not name them exactly.

usual

Happening, done, or used in the normal or common way.

turns

The third-person form of turn: changes direction, position, or condition.

gray

The color between black and white.

again

One more time, or as before.

say

To speak words, express an idea, or give information.

before

Earlier than a time, event, person, or place.

curious

Wanting to know more about something, or strange and unusual.

much

A large amount of something, used with uncountable nouns.

occur

To happen or take place; to come into someone's mind.

visible

Able to be seen.

large

Big in size, amount, number, or importance.

another

One more, or a different person or thing.

course

A set of lessons, or the direction in which something moves.

couple

Two people or things that are together or connected.

apparently

Used to say something seems true based on what you know.

decent

Good enough, acceptable, or morally fair.

actually

Used to show what is true, real, or different from what was expected.

less

A smaller amount of something.

reason

A fact, idea, or cause that explains why something happens.

stops

The present form of stop: ends movement or activity, or makes something end.

present

A gift given to someone, often for a special occasion.

hide

The skin of a large animal, especially after it has been removed and prepared for use.

main

Most important, largest, or used more than the others.

middle

The part or point that is equally far from the sides, ends, or beginning and end.

make

To create, build, prepare, or cause something to happen.

might

Shows that something is possible or could happen.

amounts

The plural form of amount: quantities or totals of something.

take

To get, hold, carry, or use something.

know

To have information, understanding, or experience of something.

ahead

In front, earlier, or toward the future.

want

To wish for something, or need something.

highlight

To mark, show, or emphasize something so people notice it.

something

A thing that is not named or not known exactly.