Science8.U4L14Test.Spring24 Answers
1. compounds (the 1 with 1 big ball and 1 on each side) and those are the only thing in there they all are the same.
2. a compound composed of oxygen and carbon atoms.
3. This one has 2 atom of one element stuck together in the top left and the bottom right(the white ones) and 2 atom of different element stuck together in the top right and the bottom left(the black ones)
4. Air is a mixture of two or more components that keep their own identifying properties, while water is composed of elements that combine forming a compound.
5. remove energy from the liquid so that its particles slow down
6. The ice particles have less energy.
7. The particles move rapidly and spread far apart.
8. Particles in hot liquids move faster.
9. Experiments 2 and 4 were designed to find chemical properties.
10. Performing an investigation to show how iron reacts with oxygen to form rust.
11. It reacts with HBr.
12. Object 1 has a mass of 150 g, and Object 2 has a mass of 450 g.
13. A gas was formed.
14. Heat is given off after mixing two substances
15. Melting
16. part of the mixture formed a new material with different properties.
17. The atomic number of this atom is 18.
18. Sr
19. 11 protons, 12 neutrons, and 11 electrons
20. this is 5pos(pink) and 6 green balls in the middle with 5 black balls around the rings
21. Her prediction is incorrect because the law of conservation of matter states that matter can neither be created nor destroyed, so the mass of the products will be 50 g.
1. compounds (the 1 with 1 big ball and 1 on each side) and those are the only thing in there they all are the same.
2. a compound composed of oxygen and carbon atoms.
3. This one has 2 atom of one element stuck together in the top left and the bottom right(the white ones) and 2 atom of different element stuck together in the top right and the bottom left(the black ones)
4. Air is a mixture of two or more components that keep their own identifying properties, while water is composed of elements that combine forming a compound.
5. remove energy from the liquid so that its particles slow down
6. The ice particles have less energy.
7. The particles move rapidly and spread far apart.
8. Particles in hot liquids move faster.
9. Experiments 2 and 4 were designed to find chemical properties.
10. Performing an investigation to show how iron reacts with oxygen to form rust.
11. It reacts with HBr.
12. Object 1 has a mass of 150 g, and Object 2 has a mass of 450 g.
13. A gas was formed.
14. Heat is given off after mixing two substances
15. Melting
16. part of the mixture formed a new material with different properties.
17. The atomic number of this atom is 18.
18. Sr
19. 11 protons, 12 neutrons, and 11 electrons
20. this is 5pos(pink) and 6 green balls in the middle with 5 black balls around the rings
21. Her prediction is incorrect because the law of conservation of matter states that matter can neither be created nor destroyed, so the mass of the products will be 50 g.
22. 20 grams
23. yes, because the missing mass was released as smoke
24. The total mass of the groups will be 0.522 kg.
25. H2O (water)
26. The Law of Conservation of Mass
27. A new substance with different properties is formed
28. The mass stays the same
29. Chemical properties
30. A physical change, because the ice can change back into water
31. Elements
32. Chemical bond
33. They are made of the same type of atoms
34. Mixture
35. Two or more different elements chemically bonded together.