HESI A2
Chemistry HESI A2 Quizlet Questions
Question 1 of 5
What charge do alpha radiation particles have?
Correct Answer: C
Rationale: The correct answer is C: +2. Alpha radiation particles are helium nuclei consisting of 2 protons and 2 neutrons, giving them a charge of +2. This charge is due to the presence of 2 protons, which are positively charged particles. Choice A (-2) is incorrect as alpha particles are positively charged. Choice B (0) is incorrect as alpha particles have a positive charge. Choice D (+1) is incorrect as alpha particles have a charge of +2 due to the presence of 2 protons.
Question 2 of 5
Which type of change occurs when no change is made to the chemical composition of a substance?
Correct Answer: B
Rationale: The correct answer is B: Physical. When no change is made to the chemical composition of a substance, it indicates a physical change. In physical changes, the substance retains its chemical identity and only its physical properties, such as shape, size, and state, are altered. This is because the particles in the substance rearrange or move without forming new substances. Choice A (Chemical) involves a change in the chemical composition, so it is incorrect. Choice C (Nuclear) involves changes at the atomic level, leading to different elements, which is not the case here. Choice D (Mechanical) involves changes in position and motion of objects, not relevant to the chemical composition of a substance.
Question 3 of 5
What charge do alpha radiation particles have?
Correct Answer: C
Rationale: The correct answer is C: +2. Alpha radiation particles are helium nuclei consisting of 2 protons and 2 neutrons, giving them a charge of +2. This charge is due to the presence of 2 protons, which are positively charged particles. Choice A (-2) is incorrect as alpha particles are positively charged. Choice B (0) is incorrect as alpha particles have a positive charge. Choice D (+1) is incorrect as alpha particles have a charge of +2 due to the presence of 2 protons.
Question 4 of 5
Which type of chemical reaction involves an active metal reacting with an ionic compound to create a new compound?
Correct Answer: B
Rationale: The correct answer is B: Single replacement. In this type of reaction, an active metal replaces another metal in an ionic compound, forming a new compound. This is due to the reactivity of the active metal displacing the less reactive metal in the compound. Combustion (choice A) involves a substance reacting with oxygen to produce heat and light. Synthesis (choice C) is the combination of two or more substances to form a new compound. Decomposition (choice D) is when a compound breaks down into simpler substances. In this scenario, single replacement best fits the description of an active metal reacting with an ionic compound to create a new compound.
Question 5 of 5
What type of bond is an electrostatic attraction between two oppositely charged ions?
Correct Answer: C
Rationale: The correct answer is C: Ionic. In an ionic bond, electrons are transferred from one atom to another, resulting in the formation of positively and negatively charged ions that are attracted to each other due to electrostatic forces. This bond is formed between a metal and a non-metal. Covalent bonds (choice A) involve the sharing of electrons between atoms, not the transfer. Metallic bonds (choice B) occur between metal atoms sharing a sea of electrons. Hydrogen bonds (choice D) are weak attractions between a hydrogen atom and a highly electronegative atom.
Similar Questions
Join Our Community Today!
Join Over 10,000+ nursing students using Nurselytic. Access Comprehensive study Guides curriculum for HESI A2-HESI A2 and 3000+ practice questions to help you pass your HESI A2-HESI A2 exam.
Subscribe for Unlimited Access