PHYSICAL SCIENCE 3rd Quarter REVIEW

What are ions?

• a. Atoms that have a charge

• b. Atoms that have the same number of electrons

• c. atoms of an element that have the same number of protons

• d. atoms od an element that have different numbers of neutrons

How do elements such as gold, copper, and lead end up on Earth?

• a. They came out of a volcanic eruption

• b. They flew from the sun to the Earth.

• c. As the earth gets close to the red giant, its gravity pulls these elements to the ground.

• d. supernova sends these elements into interstellar matter, and they up on earth.

Which biomolecular group carries and passes on the hereditary information of the organism?

• a. Carbohydrates

• b. Fats or Lipids

• c. Nucleic acids

• d. Proteins

What is the type of covalent bond which has unequal sharing of electrons?

• Ionic bond

• Metallic bond

• Nonpolar covalent

• Polar covalent

Which is known as the positively charged subatomic particle?

• a. electron

• b. isotopes

• c. proton

• d. neutron

What do you call the sugar found in ripened fruits?

• a. Dextrose

• b. Fructose

• c. Glucose

• d. Lactose

What is the type of covalent bond which has equal sharing of electrons?

• a. Ionic bond

• b. Metallic bond

• c. Nonpolar covalent

• d. Polar covalent

What will be the type of bond formed between Carbon and Oxygen? The electronegativity values of Carbon are 2.55 and O has 3.44.

• Ionic bond

• Metallic bond

• Nonpolar covalent

• Polar covalent

Which is termed the blueprint of life?

• a. Deoxyribonucleic acid

• b. Fatty acid

• c. Nucleic acid

• d. Ribonucleic acid

Which of the following is considered as the building blocks of protein?

• a. Amino acids

• b. Nucleic acids

• c. Nucleotides

• d.Polypeptides