1) Both carbon dioxide and water are pure substances. How are they similar to each other?
A. both substances have a set ratio of atoms that cannot be separated by physical means.
B. both substances have a set ratio of atoms that can be separated by physical means.
C. both substances have the same physical and chemical properties.
D. both substances have the same physical properties, but different chemical properties.
2) Felipe made a toy boat out of clay, but it kept sinking in water. He changed the boat's design by making it slightly wider than before. Why did Felipe's newly designed boat float on water?
A. He decreased the density by increasing the volume.
B. He decreased the density by decreasing the volume.
C. He increased the density by increasing the volume.
D. He increased the density by decreasing the volume.
My Answer is:
1~ C.) both substances have the same physical and chemical properties.
2~ C.) He increased the density by increasing the volume.
6 answers
See Your posts above ~DrBob222
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2.a
3.d
4.d
5.b
6.c
7.b
8.a
9.b
10.b
11.c
12.d
13.b,c,e
14.a
15.c
1 Both substances have a set ratio of atoms that cannot be separated by physical means
2. He decreased the density by increasing volume
3. Matter
4. Physical property
5. 0.20g/ml
6. Chemical property
7. Particle vibration decreased
8. the masses are equal
9. atoms
10. oil and water
11. pure substance
12. The temperature of the object is increasing while the temperature of the water is decreasing
13. The particles of substance A are more tightly held together than the particles of substance B, The particles of substance A vibrate less than the particles of substance B, Substance A has a definite shape and substance B does not
14. viscosity
15. 3,5,6,1,2,4
4 answers