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Softa [21]
3 years ago
15

Structure and Properties of Matter:Question 4

Biology
1 answer:
lidiya [134]3 years ago
4 0

Answer:

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Explanation:

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i labelled the diagram . kindly check the attached file for detail

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Can somebody help me with this?
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Answer:

Elements: H (hydrogen) He (helium) Li (lithium) Be (beryllium) B (boron)

compounds: H2O (water) H2O2 (Hydrogen peroxide) NsHCO3 (baking soda) NaCI (salt)

Element compound or mixture?: 1. Element 2. compound 3. Mixture of elements 4. mixture of compounds 5. mixture of elements and compounds.

Rewrite the sentences:

1. all matter is made up of tiny particles calles atoms and molecules

2. right

3. right

4. compounds are chemically joined together

task 2:

1. i know this is element

2. i know this is compound

3. i know this is mixture

task 3:

In this lesson i have learned that Atoms are in everything and are what makes up most of the stuff on earth. They are tiny molecules that make up me and everything around me. I have also learned that atoms are made up of Elements. Elements are chemical molecules that make up things like the air we breathe. However, when more than one element joins together a compound is formed. Compounds make up more physical things around me such as drinking water and salt for cooking. When many different compounds are joined together a mixture is formed. An example of a mixture can be sand and water.

Explanation:

3 0
3 years ago
How are the products represented in the chemical equation for photosynthesis?
Liula [17]
The correct option is D.
During the process of photosynthesis, carbon dioxide and water react together in the presence of sunlight energy to form glucose and oxygen. Glucose and oxygen are the product of photosynthesis. The chemical formula for glucose is C6H12O6 and that of oxygen is O2.
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3 years ago
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Explain the difficulties in developing antiviral drugs against dna viruses, when compared to rna viruses.
Juli2301 [7.4K]
The  DNA   virus  uses  nucleus  of  the  host  to  replicate it  genetic  material since  it  lack reverse  transcriptase enzyme.The similarities between  the  DNA virus  with human  protein it  make  difficult  to  treat  this  virus without  damaging  the  host cell.
                    while
RNA  virus  has  reverse  transcriptase  enzyme which  is  used to  replicate  its  genetic material,  but  it  lack  ability  to check  errors,  which  led  to  higher mutation  rate.The  transcriptase  enzyme  is  used  to make vaccine  which  is  used  to treat  RNA  virus
5 0
3 years ago
What does it mean when a compound’s chemical formula does not include any numbers? A. There are only single bonds in the molecul
yaroslaw [1]

Answer:

B

Explanation:

This number that is put in a compound is called a subscript. It is put in front of the symbol of the element being represented. An example is CO₂ which means there are one (1) carbon and two (2) oxygen atoms in the compound.

3 0
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