Classify matter based on measurable, testable, and observable physical properties, including mass, magnetism, physical state (solid, liquid, and gas), relative density (sinking and floating using water as a reference point), solubility in water, and the ability to conduct or insulate thermal energy or electric energy
Identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving salt in water or adding lemon juice to water.
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Q 1/10
Score 0
A mixture of beads was placed in a container, as shown below. The beads are of various sizes, and each one is made of plastic, glass, or steel. The mixture would be easy to separate because all the beads —
30
are attracted to a magnet
have the same mass
are solids
are less dense than water
Q 2/10
Score 0
Which of these is not soluble in water?
30
Oil
Salt
Honey
Sugar
10 questions
Q.
A mixture of beads was placed in a container, as shown below. The beads are of various sizes, and each one is made of plastic, glass, or steel. The mixture would be easy to separate because all the beads —
1
30 sec
5.5a
Q.
Which of these is not soluble in water?
2
30 sec
5.5a
Q.
A teacher wears protective gloves to lift a metal pan filled with boiling water from a hot plate. Why are the protective gloves necessary?
3
30 sec
5.5a
Q.
A student observes ice forming on the edge of a school building. At what temperature did the water outside the school building most likely begin to change to ice?
4
30 sec
5.5b
Q.
A way or technique of separating mixtures which involves using a magnet to attract another magnetic object away from the substance it is in.
5
30 sec
5.5b
Q.
A way or technique of separating mixtures which process involves heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue.
6
30 sec
5.5b
Q.
A student made a mixture using equal amounts of salt and pepper. The salt grains were the same size as the pepper grains. What should the student do to most easily separate the pepper from the salt?
7
30 sec
5.5c
Q.
Some people add sugar to their hot tea. Which property of the sugar remains the same when the sugar is in the tea solution?
8
30 sec
5.5c
Q.
Some ways to separate mixtures are listed below. A student is given a beaker containing gravel and water. Which of these ways could the student NOT use to separate the gravel from the water?
9
30 sec
5.5c
Q.
Why is a solution considered a homogeneous mixture?
