Particles have enough energy to break free from each other and can move around freely. What kind of substance is described?
A:solid
B:liquid
C:gas
D:Molecule
1-C
2-B
3-D
4-C
5-D
6-C
7- B AND D
8- A
9-B
10-A
11- D
12-C
13-C
14- Chemical property.
15- heterogeneous
16- density
17-chemical formula
18- temperature
19-pressure.
20- Mixture
21-mass
22-physical property
23-compound.
these are the right answers for sure
for 25
A chemical change has occurred because two gases were formed when an electric current is passed through water during the process of electrolysis
For 23:
Seperate the iron using magnets, seperate the salt using water so it dissolves, then pick up woodchips, leaving you with just sand.
24.) The iron filings can be separated by a magnet. You can use water for the wood chips because they will float. This is now leaving you with salt and sand. You can use a filter to separate the sand from the salt. After the salt water is free of sand, boil the water. The salt will be left behind
25.) A chemical change occurred because two gases were formed when the electric current is passed through water.
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1-C
2-B
3-D
4-C
5-D
6-C
7- B AND D
8- A
9-B
10-A
11- D
12-C
13-C
14- Chemical property.
15- heterogeneous
16- density
17-chemical formula
18- temperature
19-pressure.
20- Mixture
21-mass
22-physical property
23-compound.
24-The iron filings can be separated by a magnet. You can use water for the wood chips because they will float. This is now leaving you with salt and sand. You can use a filter to separate the sand from the salt. After the saltwater is free of sand, boil the water. The salt will be left behind
25-A chemical change occurred because two gases were formed when the electric current is passed through water.
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