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Svetlanka [38]
3 years ago
9

A combination is a substance formed when two or more different elements combine. True or false

Biology
1 answer:
Sergeeva-Olga [200]3 years ago
4 0

Answer:

False

Explanation:

Two or more elements combine to forma COMPOUND.

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Jose and Fran MUST follow specific safety procedures when heating water with a Bunsen burner. The safety procedures include
8_murik_8 [283]
The following are some common procedures that we should take action of when using a bunsen burner to ensure our safety:

1. Wear safety goggles. Tie up long hair and school ties if needed. This can lower the risk of catching on fire. Put a heatproof mat underneath the Bunsen burner, put a tripod and the beaker of water for heating on top of the burner.

2. Close the air hole. Before we start up the burner, the air hole must be closed or green flame (striking back) may occur 

3. light up a match or a lighter. Put it over the chimney. 

4. Turn on the gas tap, you should be able to see a yellow flame now. Remove the lighter or match and open the air hole. We should have a blue flame by now. 

5. the water should start to heat up. Never touch the hot beaker with bare hands.

6. When the water is heated up to the temperature they wanted to, it's time to close the air hole and turn off the gas tap. 

7. If they need to move the hot beaker, use heat protection gloves 

These should be the correct procedures that they should follow in order to heat the water safely. 

Hope it helps!



4 0
3 years ago
What out of these options are heterotrophs yeast Euglena paramecium
ELEN [110]

Answer:

All—yeast, euglena, and paramecium—exhibit heterotrophic mode of nutrition.

Explanation:

Yeast needs to feed on subtrates (or substances) like sugars, euglena can make its food like plants do and also feeds on other food sources, while paramecium feeds on bacteria often.

3 0
3 years ago
The point of a reprimand should be to _______ an animal.
Gnesinka [82]
I believe it would be 'D' because reprimand means to rebuke something. 
3 0
3 years ago
What part of the plasma membrane makes it difficult for water-soluble substances to move freely into and outof the cell?
koban [17]

Answer:

The nonpolar tails in the middle of the plasma membrane

Explanation:

8 0
3 years ago
What type of eye protection is required in a lab? a. Lab-grade goggles all the time for anyone working with chemicals b. Lab-gra
Strike441 [17]
It depends on your teacher, it should be A. It could be B if that’s what your teacher wants but I would go with A.
8 0
1 year ago
Read 2 more answers
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