What state of matter does this particle model represent?

The diagram models water gaining heat. What process does the arrow represent?

Name the change shown as water loses heat and its particles become arranged in fixed positions.

This model represents water leaving a wet handkerchief exposed to air. What process does it show?

What type of change occurs when paper is torn into smaller pieces?

An egg becomes firm during cooking. How is this transformation classified?

Candle wax forms a pool near the wick. How does this change differ from the wax burning?

What gas from the air supports the burning of wood?

What gas produces the bubbles when baking soda reacts with vinegar?

How does keeping fish chilled help during a trip to market?

Why should Ben prevent rust from spreading on his bicycle?

Land-based glaciers shrink as Earth warms. What happens when their water reaches the oceans?

During a dry season, a reservoir's water level falls. What problem can this cause for nearby families?

Which body system is most directly exposed when a person breathes polluted vehicle exhaust?

What can repeated acid rain do to a limestone monument?

Why must bleach and ammonia-based cleaners never be mixed?

An adult has used a similar cleaner before. What should guide the safe use of a new cleaner?

What part of the body do safety goggles protect during a teacher-guided activity?

An unknown substance spills during class. What should a pupil do first?

Where should an adult take a used rechargeable battery for safe disposal?

What hazard does this symbol warn about?

What contact hazard does this pictogram warn about?

Which process uses microorganisms to turn dry leaves into a useful soil conditioner?

Maya washes an empty jar and uses it to hold pencils. What waste-management practice does this demonstrate?

What direct benefit comes from bringing a durable shopping bag to the market repeatedly?

Why does a banana peel usually break down faster than an ordinary plastic bottle?

Which building plan best protects the habitat of forest animals?

What may happen when a fish swallows a small piece of plastic?

A pupil is unsure how hungry she is. Which serving plan best reduces food waste?

Mika notes the color and texture of a nail. What science process skill is Mika using?

Lito uses a marked cup to find how many milliliters of water he has. What science process skill is he using?

Learners group collected objects according to whether they are paper, plastic, or metal. What science process skill does this demonstrate?

A plant's soil is dry. Ana thinks lack of water caused its drooping leaves. What skill connects this evidence to an explanation?

Before a typhoon arrives, Carlo says nearby streets may flood. What science process skill does this show?

Luis wants to find out why puddles disappear and asks questions about it. What scientific attitude drives his investigation?

Rina credits a classmate whose idea she uses in her report. What scientific attitude does she demonstrate?

After hearing stronger evidence, Nena changes her earlier view. What scientific attitude does she show?

A class investigates neighborhood plastic waste. Which survey question would best help plan a waste-collection program?

Each tally mark represents one resident who reported scattered waste. How many residents are recorded?

Use the graph. What concern was reported by the most residents?