▸ Specimen Drawer

Materials & Substances — Lesson 8

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Fast recall sprint

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Browse the cards below, then start a play round — five minutes of quick drills that lock each word into memory.

Specimen

antibody

ˌæntiˌbɑːdi

A protein produced by the immune system to identify and neutralize harmful — the immune system produces antibodies to fight infections.

The immune system produces antibodies to fight infections.

Specimen

asbestos

æzˈbɛstəs

A heat-resistant mineral fiber that was widely used in building materials — the old factory was found to contain dangerous levels of asbestos.

Asbestos was commonly used in building construction until the 1980s.

Specimen

asphalt

ˈæsfælt

A black, tar-like substance used for paving roads and roofing materials — asphalt can get very hot in summer.

The workers laid new asphalt on the main road.

Specimen

balm

bɑːm

Any of various aromatic resinous substances used for healing and soothing — lip balm is essential in cold weather.

She applied some balm to her sunburned skin.

Specimen

bran

bræn

The hard outer layer of cereal grains such as wheat, rice, or oats — bran is rich in dietary fiber.

I add bran to my breakfast cereal for more fiber.

Specimen

brass

bræs

An alloy of copper and zinc — the trumpet is made of brass.

The trumpet is made of brass.

Specimen

caffeine

kæˈfiːn

A bitter, white alkaloid found in coffee, tea, and cocoa, which acts as a — coffee contains caffeine.

Coffee contains caffeine.

Specimen

catalyst

ˈkæt.əl.ɪst

A substance that causes or accelerates a chemical reaction without being changed itself — the改革 served as a catalyst for social change.

Enzymes act as catalysts in biological processes.

Specimen

chalk

tʃɔːk

A soft whitish calcite — I need to buy some chalk for my class.

The teacher wrote the equation on the chalkboard with chalk.

Specimen

charcoal

ˈtʃɑːrkoʊl

A black, porous substance made by burning wood or other organic material — the artist used charcoal to sketch the portrait.

The artist used charcoal to sketch the portrait.

Specimen

chlorine

ˈklɔr.iːn

A chemical element (symbol Cl) that is a greenish-yellow poisonous gas with a — scientists discovered chlorine in the 18th century.

Chlorine is commonly used to disinfect swimming pools.

Specimen

cork

kɔːrk

A light, porous material from the bark of the cork oak tree, used especially — the cork floated on the water.

I put the cork back in the wine bottle.

▸ Catalogue Progress 0 / 12 specimens catalogued

Mark each specimen as learned to complete this drawer.

Next drawer · Materials & Substances — Lesson 9