What happens to the chemical properties of mongo seeds and corn kernels when they are combined without reacting?

Ana completely dissolves a little table salt in water. How should she classify the resulting mixture?

How should the mixture in this bowl be classified?

A small amount of table salt dissolves in a glass of water. What role does the salt have?

Ben prepares a drink by completely dissolving a spoonful of sugar in a glass of water. What role does the water have?

After sand is stirred into water and left undisturbed, what usually happens to the sand?

Which example is a suspension?

Brass is used for furniture fittings. Which pair of substances mainly makes up this alloy?

Which of these solid mixtures is a solution?

How should the sample represented by this particle model be classified?

Use the chart. About what percentage of dry air is the gas humans need for respiration?

Which gas in air supports a candle flame?

Which gas do calamansi leaves take from the air to make food during photosynthesis?

A sealed bag filled with air takes up space.

Every planet has exactly the same mixture of gases surrounding it.

Why is nitrogen added to some sealed food packages?

What is the layer of gases surrounding Earth called?

Name the separation method shown in this setup.

A different filter paper has pores larger than these undissolved particles. What would happen if it replaced the paper shown?

Which mixture would this sieve separate most effectively?

Liza removes visible stones from rice one at a time with her fingers. Which method is she using?

Why do the husks land farther sideways than the grains in this setup?

Which separation method is illustrated here?

What separation method uses the illustrated setup to leave a dissolved solid behind?

What property makes the separation method in this diagram work?

Ordinary filter paper removes dissolved table salt from water.

Which method separates grated coconut pieces from coconut milk by passing the mixture through cloth?

Why does cooking oil form the upper layer when mixed with water and left undisturbed?

A recycling center wants to lift steel cans away from plastic containers without touching them. Which tool should it use?

Paolo compares rock salt and iodized salt, counting the stirs needed for each to dissolve. What is the independent variable?

Mika compares how quickly ink dries on two kinds of paper. What is the dependent variable?

Rosa compares freezing times for initially hot and cold water. Which factor should she keep the same?

Carlo compares ants' visits to brown and white sugar. With other conditions unchanged, which arrangement makes the test fair?

Identical pots hold equal water volumes at the same starting temperature. Which comparison fairly tests whether adding salt changes boiling time?

Before investigating, Lea proposes an explanation that she can check with an experiment. What has she written?

What should a science report include so another group can repeat the investigation under the same conditions?

A group repeats a test three times under the same conditions. What can comparing the results help them assess?

Which board shows darts that are precise but not accurate?

What mass should be recorded from this scale?

Use the stopwatch to record the elapsed time for this trial.